99.16 Newtons is the new force of attraction between the particles.
What causes an atoms to attract one another?The forces that hold atoms together to create molecules and solids are referred to as chemical bonds. The attraction between the electrons of one atom and the nuclei of another atom as a result of this electric force is what is known as a chemical bond.
[tex]F = (kq1q2)/r^2[/tex]
[tex]9,916 = (kq1q2)/r^2[/tex]
[tex]F = (k*(q1/5)*(q2/5))/(2r)^2[/tex]
[tex]F = (1/100)((kq1*q2)/(r^2))[/tex]
So, the new force of attraction is:
[tex]F = (1/100)*9,916 = 99.16[/tex]Newtons (rounded to 4 decimal places)
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If a stone has 390 J of energy and is moving with a speed of 12m/s, what is the mass of the stone?
Answer: 5.42 kg
Explanation:
The formula for kinetic energy is:
KE = 1/2 * m * v^2
where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.
We are given the kinetic energy (KE) and velocity (v), so we can rearrange the formula to solve for the mass (m):
m = 2 * KE / v^2
Substituting the given values, we get:
m = 2 * 390 J / (12 m/s)^2
m = 2 * 390 J / 144 m^2/s^2
m = 5.42 kg (rounded to two decimal places)
Therefore, the mass of the stone is approximately 5.42 kg.
A standard light bulb in the United States is 60 W (Watts). The standard wall outlet voltage in the United States is 120 V, but in Europe, the standard wall outlet voltage is 240 V. If this 60 W light bulb could be plugged into a socket in Europe, what would be true about how bright the bulb was? The bulb would be twice as bright. The bulb would be four times as bright. The bulb would be the same brightness. The bulb would be one-half as bright. The bulb would be one-quarter as bright
Light bulb could be plugged into a socket in Europe, would be true about how bright the bulb was (c). The bulb would be one-half as bright is the correct option.
The brightness of a light bulb is measured in terms of its power consumption, which is given in watts (W). When the voltage is constant, the power consumed by a device is directly proportional to its brightness. In the United States, a standard 60 W light bulb operates at 120 V. To determine the current consumed by the bulb, we can use Ohm's law:
Power = Voltage x Current
60 W = 120 V x Current
Current = 60 W / 120 V = 0.5 A
Now, if we were to plug this same 60 W light bulb into a socket in Europe with a standard voltage of 240 V, we can use Ohm's law again to determine the current consumed by the bulb:
Power = Voltage x Current
60 W = 240 V x Current
Current = 60 W / 240 V = 0.25 A
The power consumed by the bulb is the same, regardless of the voltage it is connected to. But the current consumed by the bulb in Europe is half of what it would be in the United States.
The bulb would be one-half as bright when plugged into a socket in Europe compared to when it is plugged into a socket in the United States.
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Someone throws a heavy ball to you when you are standing on roller skates. You catch the ball and begin to roll backwards. How does your speed after the collision compare to the speed of the ball before the collision? Explain your answer.
According to the law of conservation of momentum, the total momentum of a system remains constant if there are no external forces acting on the system. In this case, the system consists of the person on roller skates and the ball that is thrown.
Before the collision, the ball has momentum, and the person on roller skates is stationary. After the collision, both the ball and the person on roller skates have momentum, and they move together in the same direction.
Since the momentum of the system is conserved, the total momentum before the collision must be equal to the total momentum after the collision. Therefore, the momentum of the ball before the collision is equal to the momentum of the ball and the person on roller skates after the collision.
If we assume that the person on roller skates is much more massive than the ball, then the momentum of the person on roller skates can be neglected. In this case, the momentum of the ball before the collision is equal to the momentum of the ball and the person on roller skates after the collision.
Since the mass of the ball is much smaller than the combined mass of the ball and the person on roller skates, the speed of the ball after the collision will be much smaller than its speed before the collision. Meanwhile, the speed of the person on roller skates after the collision will be faster than their initial stationary position due to the transfer of momentum from the ball to the person on roller skates.
In summary, the speed of the ball after the collision will be slower than its initial speed, while the speed of the person on roller skates will be faster than their initial stationary position.
~~~Harsha~~~
What happens to the energy in a substance when it changes state?
It is destroyed
It is changed into matter
It changes form, but is neither destroyed nor increased
The energy remains unchanged
Answer: Energy can neither be created nor destroyed but it can only be transformed from one form to another.
Explanation: According to the law of conservation of energy given by Julius Robert Mayer Energy can neither be created nor destroyed but it can only be transformed from one form to another.
it can be explained by an example that when we burn a candle, the chemical energy of wax is converted into light energy.
Also in dams the running water of the river is used to convert mechanical energy into hydroelectric energy
(250-122) Where necessary to comply with Section 250-2(d), the equipment grounding conductors shall be sized larger than specified in ______.
Where necessary to comply with Section 250-2(d), the equipment grounding conductors shall be sized larger than specified in NEC Table 250.122.
This is because the additional size is necessary to provide a margin of safety and prevent damage to the grounding conductors due to physical stresses, such as from bending, vibration, or impact.
NEC Table 250.122 specifies the minimum size equipment grounding conductor required for various sizes of circuit conductors but does not take into account the need for increased size due to physical protection requirements.
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two shotguns are identical in every respect (including the size of the shell fired) except that one has twice the mass of the other. which gun, if either, will tend to recoil with greater velocity when fired?
The shotgun with twice the mass will tend to recoil with less velocity when fired compared to the identical shotgun with half the mass.
This is because according to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the shotgun is fired, the force of the explosion propels the shell out of the barrel and simultaneously creates a force in the opposite direction, which is the recoil. T
he greater the mass of the shotgun, the more inertia it has and the more resistance it has to the recoil force. Therefore, the shotgun with twice the mass will tend to recoil with less velocity compared to the identical shotgun with half the mass. When comparing two identical shotguns in every respect except mass, the one with twice the mass will tend to recoil with a lower velocity when fired. This is due to the conservation of momentum, where the momentum of the system (gun and shell) must remain constant before and after firing.
Since momentum equals mass multiplied by velocity (p = mv), the shotgun with greater mass will have a lower recoil velocity to maintain constant momentum.
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Which is the most precise cause for the adiabatic cooling of a rising parcel of air in the atmosphere?
-an increase in atmospheric pressure
-loss of water vapor through precipitation
-a decrease in atmospheric pressure
-closer proximity to the Sun
The most precise cause for the adiabatic cooling of a rising parcel of air in the atmosphere is a decrease in atmospheric pressure. So, answer is option C.
Because there is a decrease in the atmospheric pressure with the height of the atmosphere, when a parcel rises, it gets expanded. It is true, that the energy the expanding air expends against itself causes the temperature of the air to decrease.. It is referred to as adiabatic cooling since no heat is added to or removed from the parcel of air during this procedure. This cooling process is necessary for the atmosphere to produce clouds and precipitation. So, option C is the correct answer that is the decrease in atmosphere pressure.
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The retentive timer reset (RES) instruction is always given the same address as the timer it resets. true/false
True. The retentive timer reset (RES) instruction is always given the same address as the timer it resets.
This ensures that the correct timer is targeted and its accumulated value is reset to zero when the RES instruction is executed.The retentive timer reset (RES) instruction is always given the same address as the timer it resets in order to identify the timer being reset. This allows the instruction to reset the timer safely without affecting any other timers in the system.The Retentive Timer Reset (RES) is a feature of a timer that allows it to retain its current value and continue counting or timing after the timer has been reset. This feature is useful in applications where an event needs to be triggered after a certain period of time and the time period needs to be reset or restarted after it has been previously triggered.
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11) Approximately how far is the Sun from the center of the galaxy? A) 27 light-years B) 270 light-years C) 2,700 light-years D) 27,000 light-years E) 27 million light-years
The Sun is approximately D) 27,000 light-years away from the center of the galaxy.
The Sun is located in the Milky Way galaxy, which is a barred spiral galaxy. The distance from the Sun to the center of the galaxy has been estimated by astronomers using various methods, including measurements of the positions and motions of stars, gas, and dust in the galaxy.
The most recent estimates suggest that the distance from the Sun to the center of the galaxy is approximately 27,000 light-years. This estimate is based on observations of the motion of stars in the galactic disk, as well as the distribution of interstellar gas and dust in the galaxy.
It's worth noting that the distance to the center of the galaxy is not a fixed value, as the galaxy itself is rotating and the Sun is in orbit around the center. The actual distance to the center of the galaxy from the Sun will therefore vary over time.
In summary, the answer is D) 27,000 light-years.
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Magnification of a lens or mirror (m) is negative when...
Magnification (m) of a lens or mirror is negative when the image formed by the lens or mirror is inverted relative to the object.
Magnification (m) of a lens or mirror is negative when the image formed by the lens or mirror is inverted relative to the object. This means that the top of the object is imaged at the bottom of the image, and vice versa.
In general, magnification describes the degree to which an optical system can increase or decrease the size of an object. It is defined as the ratio of the size of the image (h') to the size of the object (h), and can be expressed mathematically as:
m = -h' / h
When the magnification is negative, it indicates that the image is inverted relative to the object. When the magnification is positive, it indicates that the image is upright relative to the object. A magnification of zero would indicate that the image is the same size as the object.
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a 2.0-kg object is moving without friction along the x-axis. the potential energy curve as a function of position is shown in the figure, and the system is conservative. if the speed of the object at the origin is 4.0 m/s, what will be its speed at 5.0 m along the x-axis? g
In this conservative system, the object is moving along the x-axis without friction. The potential energy curve represents the energy changes as the object moves.
To find its speed at 5.0 m along the x-axis, we need to apply the conservation of mechanical energy principle, which states that the total mechanical energy (sum of kinetic and potential energy) remains constant.
At the origin (x=0), the object has a kinetic energy KE1 = 0.5 * mass * speed^2 = 0.5 * 2.0 kg * (4.0 m/s)^2 = 16 J. Since the object is at the origin, its potential energy PE1 is zero. So, the total mechanical energy E1 = KE1 + PE1 = 16 J.
At x = 5.0 m, we need to find the potential energy PE2 from the given potential energy curve. Once we know PE2, we can determine the kinetic energy KE2 = E1 - PE2. Finally, we can calculate the speed at 5.0 m along the x-axis using the kinetic energy formula: speed = sqrt(2 * KE2 / mass).
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Part A At a point in space, an electric force acts vertically downward on a proton. The direction of the electric field at the point is? O down. O up O zero O undetermined
The direction of the electric field at the point is up. The direction of the electric field at a point in space where an electric force acts vertically downward on a proton is up.
This is because the electric field (E) at a point in space is defined as the force per unit charge that a small positive test charge would experience if it were placed at that point. The direction of the electric field is the direction of the force that would be exerted on a positive test charge placed at that point.
Since the electric force is acting vertically downward on a positively charged proton, we know that the direction of the electric field must be opposite to the direction of the force. Therefore, the electric field at the point must be vertically upward, in order to exert an upward force on a positively charged test charge placed at that point.
The direction of the electric field at a point in space is determined by the direction of the force that a positive test charge would experience if it were placed at that point. The electric field at a point is a vector quantity, meaning it has both magnitude and direction.
In this scenario, a positively charged proton experiences an electric force that acts vertically downward. This means that if a small positive test charge were placed at the same point as the proton, it would experience an electric force that acts vertically upward, in the opposite direction to the electric force on the proton.
Therefore, the electric field at the point must be vertically upward, in order to exert an upward force on a positively charged test charge placed at that point.
It is important to note that the electric field is a property of the space around a charged particle or collection of charges. The electric field at a point is not affected by the presence or absence of other charges or particles, as long as they are sufficiently far away to not significantly affect the electric field at the point in question.
The direction of the electric field at a point in space where an electric force acts vertically downward on a proton is vertically upward.
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what will be the approximate distance between the points where the ion enters and exits the magnetic field? what will be the approximate distance between the points where the ion enters and exits the magnetic field? 300 cm 200 cm 100 cm 400 cm
When an ion enters a magnetic field, its trajectory will be affected due to the interaction between its charge and the magnetic field.
The distance between the points where the ion enters and exits the magnetic field depends on the specific conditions, such as the ion's charge, mass, velocity, and the strength of the magnetic field. Without additional information, it is impossible to determine the precise distance.
However, the options given are 300 cm, 200 cm, 100 cm, and 400 cm. Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts.
A pictorial representation of the magnetic field which describes how a magnetic force is distributed within and around a magnetic material.
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a saw blade accelerates from rest to 3000 rpm in 1.25s. if the blade has a radius of 15 cm and a mass of 300g, what is the torque of the motor? assume the blade to be a uniform disk.
To find the torque of the motor, we need to use the formula:
Torque = Moment of Inertia x Angular Acceleration
First, let's find the moment of inertia of the saw blade. Since it's a uniform disk, we can use the formula:
Moment of Inertia = (1/2) x Mass x Radius^2
Plugging in the given values, we get:
Moment of Inertia = (1/2) x 0.3 kg x (0.15 m)^2
Moment of Inertia = 0.003375 kg·m^2
Next, let's find the angular acceleration of the saw blade. We know that it accelerates from rest to 3000 rpm (or 314.16 rad/s) in 1.25 seconds, so:
Angular Acceleration = (Final Angular Velocity - Initial Angular Velocity) / Time
Angular Acceleration = (314.16 rad/s - 0 rad/s) / 1.25 s
Angular Acceleration = 251.328 rad/s^2
Now we can plug these values into the torque formula:
Torque = 0.003375 kg·m^2 x 251.328 rad/s^2
Torque = 0.848 N·m
Therefore, the torque of the motor is 0.848 N·m.
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The first step in solving this problem is to determine the angular acceleration of the saw blade. We can use the formula:
ωf = ωi + αt
where ωf is the final angular velocity, ωi is the initial angular velocity (which is zero in this case, as the blade starts from rest), α is the angular acceleration, and t is the time interval.
Substituting the given values, we get:
3000 rpm = 0 + α * 1.25 s
Converting the final angular velocity to radians per second:
3000 rpm = (3000 rpm) * (2π rad/rev) / 60 s
3000 rpm = 314.16 rad/s
So, we have:
314.16 rad/s = α * 1.25 s
α = 251.33 rad/s^2
Next, we can calculate the moment of inertia of the saw blade, assuming it is a uniform disk.
The moment of inertia of a uniform disk is given by the formula:
I = (1/2) * m * r^2
where m is the mass of the disk, and r is the radius of the disk.
Substituting the given values, we get:
I = (1/2) * 0.3 kg * (0.15 m)^2
I = 0.003375 kg m^2
Finally, we can use the formula for torque:
τ = I * α
Substituting the calculated values, we get:
τ = 0.003375 kg m^2 * 251.33 rad/s^2
τ = 0.848 Nm
Therefore, the torque of the motor is approximately 0.848 Nm.
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the size of a neutron star is group of answer choices about the same as that of our solar system. about the same as that of the sun. about the same as earth. smaller than any of these.
The size of a neutron star is smaller than any of the given answer choices.
A neutron star is an extremely dense object that is formed from the collapsed core of a massive star that has undergone a supernova explosion. The mass of a neutron star is typically 1.4 times that of our Sun, but its size is only about 20 km in diameter, making it one of the most compact objects in the universe.
To put this into perspective, the diameter of our solar system is about 287 billion km, the diameter of the Sun is about 1.4 million km, and the diameter of the Earth is about 12,742 km. Therefore, a neutron star is much smaller than any of these objects, and its mass is packed into a space that is comparable in size to a medium-sized city.
In conclusion, a neutron star is much smaller than any of the given answer choices, with a diameter of only about 20 km.
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A neutron star is a very compact and incredibly dense object formed from the core of a massive star after a supernova explosion.
1) Our solar system is vast, spanning a distance of over 100 astronomical units (AU), with the distance between the Sun and the outer planets being several billion kilometers.
In contrast, a neutron star typically has a radius of about 10-15 kilometers, which is much smaller than the distance between any two objects in the solar system.
2) The Sun, on the other hand, is much larger than a neutron star, with a radius of about 696,000 kilometers.
The Earth, which is one of the smaller planets in our solar system, has a radius of about 6,371 kilometers.
Therefore, a neutron star is significantly smaller than both the Sun and the Earth.
3) The size of a neutron star is determined by its mass and density, which are both extremely high.
A typical neutron star has a mass of about 1.4 times that of the Sun, but is only about 10-15 kilometers in radius.
This makes it incredibly dense, with a mass-to-volume ratio that is several times higher than that of an atomic nucleus.
In summary, a neutron star is much more massive than the Sun or the Earth, but its size is significantly smaller than both, making it smaller than any of the options given.
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what is the energy of a 0.051 kg tennis ball moving at 9.7 m/s
Answer: 2.390 J (joules).
Explanation:
Given:
Mass of tennis ball = 0.051 kg
Velocity of tennis ball = 9.7 m/s
To find:
Kinetic energy of the tennis ball
Solution:
Using the formula for kinetic energy:
Kinetic energy = (1/2) * mass * velocity^2
Plugging in the values:
Kinetic energy = (1/2) * 0.051 kg * (9.7 m/s)^2
Kinetic energy = (1/2) * 0.051 kg * 94.09 m^2/s^2
Kinetic energy = 2.390 J
Therefore, the kinetic energy of a 0.051 kg tennis ball moving at 9.7 m/s is 2.390 J (joules).
Question 9 Marks: 1 The flushometer valve is typically protected byChoose one answer. a. a non-pressure-type vacuum breaker b. a pressure-type vacuum breaker c. a backflow preventer d. a reduced pressure zone backflow preventor
The flushometer valve is typically protected by a backflow preventer.
This device ensures that water flows in only one direction, preventing any contamination or backflow of non-potable water into the potable water supply. The backflow preventer can be a reduced pressure zone backflow preventer, which is designed to offer the highest level of protection by creating a zone of reduced pressure between the potable water supply and non-potable water.
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(Table 310-15(a)(16)): What size conductor is required to feed a 16 ampere load when the conductors are in an ambient temperature of 100F? The circuit is protected with a 20-ampere overcurrent protection device.
To determine the size of the conductor required to feed a 16 ampere load with a 20-ampere overcurrent protection device, we need to use the National Electric Code (NEC) ampacity tables.
For conductors in an ambient temperature of 100°F, we need to use the 90°C column of the tables. Based on NEC Table 310.16, a 14 AWG copper conductor can handle up to 20 amperes at 90°C. Therefore, a 14 AWG copper conductor would be sufficient to feed the 16 ampere load and protect the circuit with a 20-ampere overcurrent protection device.
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Full Question: What size conductor is required to feed a 16 ampere load when the conductors are in an ambient temperature of 100F? The circuit is protected with a 20-ampere overcurrent protection device.
When selecting a conductor for a circuit, always select the conductors not smaller than the _______ of the equipment.
When selecting a conductor for a circuit, always select the conductors not smaller than the "minimum ampacity" of the equipment.
This ensures that the conductor can safely handle the current passing through it without overheating or causing damage to the circuit or equipment.
The National Electrical Code (NEC) provides ampacity tables and formulas to help electricians and designers select the appropriate conductor size based on the expected load and installation conditions. It is important to note that selecting a conductor that is too small for the equipment it will supply can result in overheating, equipment damage, and even fire hazards while selecting a conductor that is too large for the load can result in increased material and installation costs.
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According to Newton's law of universal gravitation, when the distance between two masses is increased by a factor or 3, the attractive gravitational force between them is
According to Newton's law of universal gravitation, when the distance between two masses is increased by a factor of 3, the attractive gravitational force between them is decreased by a factor of 9 (3 squared).
This means that the force decreases exponentially as the distance between the masses increases.
According to Newton's law of universal gravitation, when the distance between two masses is increased by a factor of 3, the attractive gravitational force between them is decreased by a factor of 9 (3²).
This is because the gravitational force is inversely proportional to the square of the distance between the masses.
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If, prior to applying the pads, you see a medication patch on the person's chest you should--
Remove it with gloved hands
Leave the patch on the chest and place the AED pads on chest even if they touch the patch.
Leave the patch on the chest and place the AED pads around the patch so they don't touch the patch.
Remove the patch using no gloves.
Remove the patch with gloved hands before applying the AED pads to the person's chest. It is important to ensure that the chest is clean and dry before applying the AED pads to maximize their effectiveness.
AED pads (automated external defibrillator pads) are adhesive pads that are placed on a person's chest to deliver an electric shock in the event of sudden cardiac arrest (SCA). AED pads are an important component of an AED, which is a portable medical device used to treat people experiencing cardiac arrest. AED pads are typically sold in pairs, with one pad placed on the upper right chest and the other on the lower left side of the chest. The pads contain sensors that analyze the person's heart rhythm and determine whether a shock is needed. If a shock is required, the AED delivers a controlled electric shock to the heart through the pads to restore a normal heart rhythm. The AED pads are designed to be easy to use and are equipped with clear visual and audio instructions to guide the user through the process of applying them to the person's chest. The pads are also designed to be compatible with different types of AEDs, making it easy to replace or upgrade them if needed.
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Which is the largest?
International Space Station
Venus
Jupiter
Mercury?
Jupiter is the largest. It is the largest planet in the Solar System, with a diameter of about 86,881 miles (139,822 kilometers).
The International Space Station (ISS) is a habitable artificial satellite in low Earth orbit, with a size of approximately 357 feet (109 meters) in length and 240 feet (73 meters) in width.
Venus is the second planet from the Sun and has a diameter of about 7,520 miles (12,104 kilometers), which makes it similar in size to Earth.
Mercury is the smallest planet in the Solar System, with a diameter of about 3,032 miles (4,879 kilometers).
Therefore, the correct answer is Jupiter.
you exert a 19 Nm torque on a solid disk that has a moment of inertia equal to 12 Kg m^2. How long will it take the disk to complete half of one full rotation
The time it will take the disk to complete half of one full rotation is 1.96 seconds.
The torque applied to the disk is given by the formula:
τ = Iα
where τ is the torque, I is the moment of inertia, and α is the angular acceleration.
Rearranging this formula, we can solve for the angular acceleration:
α = τ / I
The angular acceleration is also related to the angular displacement and time by the formula:
θ = 1/2 α t²
where θ is the angular displacement and t is the time. Rearranging this formula, we can solve for the time:
t = sqrt(2 θ / α)
In this problem, we want to find the time it takes for the disk to complete half of one full rotation, which is an angular displacement of 180 degrees or π radians. Since the disk has to rotate both clockwise and counterclockwise, we only need to consider half of the angular displacement:
θ = π / 2
The torque applied to the disk is 19 Nm and the moment of inertia is 12 Kg m², so the angular acceleration is:
α = 19 Nm / 12 Kg m² = 1.58 rad/s²
Substituting these values into the formula for time, we get:
t = sqrt(2 π / (4 α)) = 1.96 s
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Question 60 Marks: 1 Diatomaceous earth filtersChoose one answer. a. should be integrated into pressure-tank systems b. can be used for public water supplies c. should be augmented by chlorination d. can be left unattended for long periods of time
Diatomaceous earth filters can be used for public water supplies, but they should be augmented by chlorination. Option A is the correct answer.
Diatomaceous earth filters are effective at removing small particles and can be used for public water supplies. However, they should be augmented by chlorination to ensure the complete removal of harmful microorganisms.
These filters consist of a thin layer of diatomaceous earth on top of a support structure. As water passes through the filter, particles are trapped in the diatomaceous earth layer.
Over time, the diatomaceous earth becomes clogged with particles and must be cleaned or replaced.
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The question is -
Diatomaceous earth filters:
a. Should be supplemented by a chlorination system
b. Should be integrated into a rapid sand filtration system
c. Can be used for a public water treatment system
d. Cane be used in a public sewer treatment system
For a Symmetrical airfoil:a.) the center of Pressure moves forward as AOA increase b.) the center of pressure stays at the same place as AOA increasesc.) there is no pitching moment about the Center of Pressure
For a Symmetrical airfoil, the center of pressure stays at the same place as AOA increases. This is because the airflow is evenly distributed above and below the airfoil, resulting in equal pressure on both sides. As a result, there is no lift generated at zero angle of attack, and the center of pressure remains at the 25% chord point.
As the angle of attack increases, the lift increases, but the distribution of pressure remains symmetrical, keeping the center of pressure in the same place.
Furthermore, there is no pitching moment about the center of pressure for a symmetrical airfoil. This is because the forces acting on the top and bottom surfaces of the airfoil are equal and opposite, resulting in no net moment. As a result, symmetrical airfoils are often used in aerobatic and high-speed applications where stability and control are critical.
In conclusion, for a symmetrical airfoil, the center of pressure remains at the same place as AOA increases, and there is no pitching moment about the center of pressure. These characteristics make symmetrical airfoils a popular choice for high-speed and aerobatic applications.
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Question 19 Marks: 1 A centrifugal pump is limited to use where the lift of the water is not in excess ofChoose one answer. a. 33.9 feet b. 20 feet c. 15 feet d. 90 feet
c: 15 feet. This means that a centrifugal pump would only be effective for lifting water to a height of 15 feet or less. Any lift beyond this height would require a different type of pump or additional equipment to assist with the lifting process.
This type of pump is commonly used in applications such as water treatment plants, HVAC systems, and irrigation systems.
A centrifugal pump is a type of pump that works by using a rotating impeller to create a flow of fluid or gas.
One of the limitations of a centrifugal pump is that it is only effective for lifting fluids up to a certain height, which is known as the pump's maximum lift or head.
It is important to note that the maximum lift of a centrifugal pump can be affected by various factors, such as the pump's size, speed, and design, as well as the properties of the fluid being pumped.
Therefore, it is essential to carefully consider these factors when selecting a pump for a specific application to ensure that it is capable of meeting the required lift and flow rate.
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the resistivity of metallic conductor nearly always
The resistivity of metallic conductors nearly always tends to be low, making them efficient conductors of electricity.
The resistivity of metallic conductors nearly always decreases as the temperature increases. This is because metallic conductors, like metals, have a regular arrangement of atoms and free electrons that facilitate the flow of electric current, making them good conductors of electricity. However, as the temperature increases, the atoms in the conductor vibrate more, leading to increased collisions between electrons and atoms, which in turn reduces the overall resistivity.
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Why is it easy to remove air from balloon and is difficult to remove air from glass bottle?
Answer:
It is easy to fill air in the balloon but it is very difficult to remove air from a glass bottle. Why? Ans. It is easy to fill air in the balloon but it is very difficult to remove air from a glass bottle because pressure inside the bottle is less than atmospheric pressure.
Explanation:
What size THHN conductor is required for a 50 ampere circuit, listed for use at 75 degrees C?
For a 50 ampere circuit listed for use at 75 degrees Celsius, a #6 THHN conductor is required.
To determine the size of the THHN conductor required for a 50-ampere circuit listed for use at 75 degrees C, we need to consult the NEC (National Electric Code) Table 310.16, which provides ampacity ratings for different sizes of conductors at different temperatures.
According to Table 310.16, a 50-ampere circuit requires a minimum of #6 AWG THHN conductor for use at 75 degrees C.
It's important to note that this answer assumes certain conditions, such as a single-phase, 120/240V circuit, and other factors that may affect conductor sizing. It's always best to consult the NEC and local codes, as well as a qualified electrician, to ensure proper conductor sizing and installation for a specific application.
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your success as a businessperson is connected closely to your ability to convince others to
Your success as a businessperson is indeed closely connected to your ability to convince others.
In any business, success often depends on the ability to persuade others , whether it's convincing investors to invest in your company, convincing customers to buy your products or services, or convincing employees to work towards a common goal.
Effective persuasion requires a combination of strong communication skills, the ability to understand and address the needs and concerns of your audience, and the ability to build trust and credibility.
Some specific techniques for effective persuasion include:
1) Tailoring your message to your audience: To be effective, your message needs to resonate with your audience.
This means taking the time to understand their needs, interests, and concerns, and tailoring your message accordingly.
2) Providing evidence and examples: People are often more convinced by evidence and examples than by abstract arguments. By providing concrete evidence and examples to support your message, you can make it more compelling and convincing.
3) Building trust and credibility: People are more likely to be convinced by someone they trust and respect.
Building trust and credibility can involve being transparent and honest, demonstrating expertise and knowledge, and being consistent and reliable.
4) Using storytelling: Stories can be a powerful way to persuade people, as they can help to create an emotional connection and engage people's imaginations.
By telling stories that illustrate your message, you can make it more memorable and persuasive.
Overall, the ability to persuade others is a critical skill for success in business, and mastering the art of persuasion can help you to achieve your goals and build strong relationships with customers, investors, and employees.
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