To convert Pascal (Pa) to Kilopascal (kPa), you can use the following formula:1 kPa = 1000 Pa and 1 Pa = 0.001 kPa
Pascal's theory refers to the scientific contributions of Blaise Pascal, a French mathematician, physicist, and philosopher who lived in the 17th century. Pascal's work made significant contributions to several areas of science, including mathematics, physics, and hydrodynamics.
One of Pascal's most famous contributions to science is his work on hydrostatics, the study of fluids at rest. He discovered that the pressure exerted by a fluid at rest is the same in all directions, a principle known as Pascal's law. This law has important applications in many fields, including hydraulic systems, which rely on the transfer of pressure through fluids to power machines.
Pascal also made contributions to the study of probability theory, including the development of a mathematical theory of probability and the use of probability to solve problems in gambling. He also made important contributions to the development of the mechanical calculator, a precursor to modern computers.
Therefore, to convert Pa to kPa, you can divide the value in Pa by 1000. For example, if you have a pressure of 5000 Pa and want to convert it to kPa, you can divide 5000 by 1000 to get:
5000 Pa / 1000 = 5 kPa
So, 5000 Pa is equivalent to 5 kPa.
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Two boys of masses 45kg and 60kg sit facing one another on light frictionless trolleys holding the ends of a strong taut cord between them. The lighter boy tugs the cord and acquires a velocity of 2m/s. What is the initial velocity of the other boy? What happens to their motion when they collide? Explain your answers carefully.
The lighter youngster pulls on the cord to reach a speed of 2 m/s. What is the other boy's beginning velocity when they collide, what occurs to their motion.
A collision is what?Particles in this homogeneous-appearing heterogeneous mixture range in size from 1 nm to 100 nm (1 nm = 109 m) and are scattered across a continuous media. In this instance, the two bodies quickly exert forces on one another. The collision changes the momentum and energy of the bodies that are interacting.
An example of a combination?A mixture is a physical combination of two or more distinct substances that can come in the form of liquids, suspensions, or colloids.
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what is the average power output of a weightlifter who can lift 250 kg a height of 2.0 m in 2.0 s?
The average power output of the weightlifter is 2,500 watts.
Power is defined as the rate at which work is done, or the amount of work done per unit time. In this case, the work done is the lifting of the weight (250 kg) a certain height (2.0 m), and the time taken to do the work is 2.0 s.
Power = Work / Time
Work = Force x Distance
where Force is the weight of the object (250 kg x 9.8 m/s^2 = 2,450 N) and Distance is the height lifted (2.0 m).
So, Work = 2,450 N x 2.0 m = 4,900 J
Power = Work / Time = 4,900 J / 2.0 s = 2,450 W
Therefore, the average power output of the weightlifter is 2,500 watts (W), which is equivalent to 2.5 kilowatts (kW).
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What is the period of a 1.3 m
-long pendulum on Venus?
The time period of the simple pendulum on Venus is found to be 2.41 seconds.
Explain about the term time period of simple pendulum?Another mechanical mechanism that oscillates is the straightforward pendulum. It consists of a point mass "m" hung from a fixed support by a light, inextensible string with length L.
A basic pendulum with length L has a period T given by -, wherein g is just the acceleration brought on by gravity. Keep in mind that a basic pendulum's period is solely dependent on its length and the gravitational constant's strength. It is independent of the vibration's magnitude or the mass of the item hanging from its end.Time period:
T= 2π√(L/g)
g on Venus = 8.8 m/s²
T = 2*3.14*√(1.3/8.8)
T = 2.41
Thus, the time period of the simple pendulum on Venus is found to be 2.41 seconds.
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when an illustration shows how actual components appear, it is called a component or a(n) ? drawing.
A cοmpοnent οr pictοrial diagram is an illustratiοn that depicts hοw actual cοmpοnents appear.
What exactly is a pictοrial diagram?The pictοrial diagram is the mοst fundamental type οf diagram. It shοws a diagram οr sketch οf the variοus system cοmpοnents as well as the wiring between these cοmpοnents. Even if yοu are unfamiliar with the physical appearance οf system cοmpοnents, this simplified diagram allοws yοu tο quickly identify them.
This diagram shοws the variοus cοmpοnents withοut regard tο their physical lοcatiοn, hοw the wiring is labelled, οr hοw the wiring is rοuted. It dοes, hοwever, shοw the sequence in which the cοnstituents are linked.
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(21) A car covered a distance of 180 km. with velocity magnitude 20 m./sec. on a straight road, then the time taken to cover this distance =
Answer:
i got u
Explanation:
To find the time taken to cover a distance of 180 km with velocity magnitude 20 m/sec, we can use the formula:
time = distance / velocity
Converting the distance to meters, we get:
180 km = 180,000 m
Plugging in the values, we get:
time = 180,000 m / 20 m/sec
Simplifying, we get:
time = 9,000 seconds
Therefore, the time taken to cover a distance of 180 km with velocity magnitude 20 m/sec is 9,000 seconds.
The following data were collected from the gravimetric analysis of a hydrated salt: Mass of crucible and lid (g) 19.437 Mass of crucible, lid, and hydrated salt (g) 21.626 Mass of crucible, lid, and anhydrous salt (g) 21.441 Determine the percent water in the hydrated salt.
The percent water in the hydrated salt is 8.45%. This means that the hydrated salt contains 8.45% water by mass as per gravimetric analysis.
To determine the percent water in the hydrated salt, we need to calculate the mass of water present in the hydrated salt and then divide it by the total mass of the hydrated salt. based on gravimetric analysis. We can use the data provided to calculate the mass of water as follows:
Hydrated salt mass = Crucible, lid, and hydrated salt mass - crucible and lid mass
= 21.626 g - 19.437 g
= 2.189 g
Anhydrous salt mass = Crucible, lid, anhydrous salt mass- crucible and lid mass
= 21.441 g - 19.437 g
= 2.004 g
Water mass = Hydrated salt mass - Anhydrous salt mass
= 2.189 g - 2.004 g
= 0.185 g
Now, we can calculate the percent water in the hydrated salt as follows:
Percent water = (mass of water ÷ mass of hydrated salt) × 100%
= (0.185 g ÷ 2.189 g) × 100%
= 8.45%
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A baseball is thrown straight up with a velocity of 60 m/s. C) how many seconds later will the baseball reach its maximum height?
The baseball will reach its maximum height after approximately 6.11 seconds using equations of motion where velocity is given
When a baseball is thrown straight up with an initial velocity of 60 m/s, it will eventually reach a maximum height before falling back down due to gravity. To determine how many seconds later the baseball will reach its maximum height, we need to use the equations of motion.
The equation we can use to find the time taken for the baseball to reach its maximum height is:
t = Vf / g
where t is the time taken, Vf is the final velocity (which is zero at the maximum height), and g is the acceleration due to gravity, which is approximately [tex]9.81 m/s^2[/tex].
Substituting:
t = 60 / 9.81
t ≈ 6.11 seconds
Therefore, the baseball will reach its maximum height after approximately 6.11 seconds. After this point, the baseball will begin to fall back down to the ground due to the force of gravity, with its velocity increasing at a rate of [tex]9.81 m/s^2[/tex]
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how the daily conditions in the earth's atmosphere?
During day, atmosphere gets warm causing air to rise and circulate and at night it cools down and radiates heat back into space leading to stability.
The daily conditions in the Earth's atmosphere are complex and variable, influenced by a range of factors including temperature, pressure, humidity, and wind patterns. Understanding these conditions is essential for predicting and responding to weather events and for developing strategies to mitigate the impact of climate change on the planet.
The Earth's atmosphere is the layer of gases that surrounds the planet and plays a crucial role in supporting life. The daily conditions in the Earth's atmosphere can vary depending on various factors, such as the time of day, location, and weather patterns.
During the day, the atmosphere experiences warming due to the energy from the sun, which causes the air to rise and circulate, leading to the formation of clouds and other weather phenomena. The intensity of the warming depends on the angle of the sun's rays and the amount of cloud cover, which can affect the temperature and humidity levels.
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what is the factors that influence the strength of gravity between two objects ?
Answer:
Below
Explanation:
Fgravity = G m1 m2 / r^2 G is a constant
so the factors that affect the gravity are the square of the distance between the two objects and the two masses
The Big Bang Theory suggests that our universe formed as the result of a huge explosion that sent all existing matter flying outward from a single point. The Big Bang Theory is supported by which of these observations?
answer choices
All matter in the universe is composed of the same atoms.
All galaxies appear to be moving away from all other galaxies.
All stars in the universe are approximately the same age.
The universe is relatively the same temperature in all locations.
Answer:
All galaxies appear to be moving away from all other galaxies.
Explanation:
i m smart brainlist please
How much power is used if a force of 70 N is used to push a box a distance of 20 m in 5 s?
The power used is the work done divided by the time taken. Work is calculated by multiplying the force by the distance moved. In this case, the work done is 70 N x 20 m = 1400 Nm. The time taken is 5 seconds, so the power used is 1400 Nm / 5 s = 280 W.
What is force?Force is a fundamental concept in Physics and is defined as an interaction between two objects that causes a change in the motion of one or both objects. Force is a vector quantity, meaning it has both magnitude and direction. Forces can be exerted by both natural and man-made objects, and can cause changes from linear motion to changes in shape or rotation. Examples of forces include gravity, friction, and magnetism. In Physics, the study of forces is called mechanics.
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You ride a roller coaster with a loop-the-loop.A) Compare the normal force that the seat exerts on you to the force that Earth exerts on you when you are passing the bottom of the loop. Express your answer in terms of R (radius of the loop), vb (speed at the bottom of the loop), and constant g.B) Compare the normal force that the seat exerts on you to the force that Earth exerts on you when you are passing the top of the loop. Express your answer in terms of R (radius of the loop), vt (speed at the top of the loop), and constant g.You ride a roller coaster with a loop-the-loop.A) Compare the normal force that the seat exerts on you to the force that Earth exerts on you when you are passing the bottom of the loop. Express your answer in terms of R (radius of the loop), vb (speed at the bottom of the loop), and constant g.Nbottommg =
A) At bottom Normal force is minimum, so: [tex]Nbottom = mvb^2/R - mg[/tex] B) At top Normal force is maximum, so: [tex]Ntop = mvt^2/R + mg[/tex]
A) When you are passing the bottom of the loop, the normal force that the seat exerts on you can be compared to the force that Earth exerts on you. At the bottom of the loop, the net force on you is equal to the force of gravity, and it acts towards the center of the loop, providing the centripetal force required to keep you moving in a circular path.
The normal force, N, is the force exerted by the seat on you, perpendicular to the surface of the seat. The force of gravity, mg, acts vertically downwards. Therefore, we can write:
[tex]Nbottom + mg = Fnet = mvb^2/R[/tex]
where R : radius of the loop and vb : speed at the bottom of the loop.
At the bottom of the loop, the normal force is at a minimum, and it is equal to:
[tex]Nbottom = mvb^2/R - mg[/tex]
B) When you are passing the top of the loop, the normal force that the seat exerts on you can be compared to the force that Earth exerts on you. At the top of the loop, the net force on you is again equal to the force of gravity, but it acts downwards, providing the centripetal force required to keep you moving in a circular path.
The normal force, N, is still perpendicular to the surface of the seat. The force of gravity, mg, acts vertically downwards. Therefore, we can write:
[tex]Ntop + mg = Fnet = mvt^2/R[/tex]
where vt : speed at the top of the loop.
At the top of the loop, the normal force is at a maximum, and it is equal to:
[tex]Ntop = mvt^2/R + mg[/tex]
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In the rectanglehe sides have lengths 5 cm and 15 cm, q1 = -5 µC, and q2 = +2 µC.(a) With V = 0 at infinity, what is the electric potential at corner A?(b) What is the electric potential at corner B?(c) How much work is required to move a third charge q3 = +3 µC from B to A along a diagonal of the rectangle?d) Does this work increase or decrease the electric energy of the three-charge system?(e) Is more, less, or the same work required if q3 is moved along a path that is inside the rectangle but not on a diagonal?(f) Is more, less, or the same work required if q3 is moved along a path that is outside the rectangle?
The electric potential at corner A is -780 V.
What formula could be used to determine electric potential?To solve this problem, we can use the formula for electric potential:
V = kq/r
where V is the electric potential, k is the Coulomb constant (9 x 10^9 N m^2/C^2), q is the charge, and r is the distance from the charge.
(a) To find the electric potential at corner A, we need to add the contributions from q1 and q2. The distance from q1 to A is 5 cm, and the distance from q2 to A is 15 cm. Using the formula for electric potential, we get:
V1 = kq1/r1 = (9 x 10^9 N m^2/C^2)(-5 x 10^-6 C)/(0.05 m) = -900 V
V2 = kq2/r2 = (9 x 10^9 N m^2/C^2)(2 x 10^-6 C)/(0.15 m) = 120 V
The total electric potential at A is the sum of V1 and V2:
V = V1 + V2 = -900 V + 120 V = -780 V
Therefore, the electric potential at corner A is -780 V.
(b) To find the electric potential at corner B, we use the same formula and distances, but with the signs of the charges reversed:
V1 = kq1/r1 = (9 x 10^9 N m^2/C^2)(5 x 10^-6 C)/(0.05 m) = 900 V
V2 = kq2/r2 = (9 x 10^9 N m^2/C^2)(-2 x 10^-6 C)/(0.15 m) = -120 V
The total electric potential at B is the sum of V1 and V2:
V = V1 + V2 = 900 V - 120 V = 780 V
Therefore, the electric potential at corner B is 780 V.
(c) To find the work required to move q3 from B to A along a diagonal of the rectangle, we can use the formula:
W = ΔV*q3
where ΔV is the change in electric potential, which is the difference between the electric potentials at B and A, and q3 is the charge. Using the values we found in parts (a) and (b), we get:
ΔV = V(B) - V(A) = 780 V - (-780 V) = 1560 V
W = ΔV*q3 = (1560 V)(3 x 10^-6 C) = 4.68 x 10^-3 J
Therefore, the work required to move q3 from B to A along a diagonal of the rectangle is 4.68 x 10^-3 J.
(d) Moving q3 from B to A along a diagonal of the rectangle increases the electric energy of the three-charge system. This is because the electric potential energy of a charge q in an electric potential V is given by:
U = qV
When q3 is moved from B to A, its electric potential energy increases because the electric potential at A is lower than the electric potential at B. Therefore, the work done to move q3 from B to A is converted into electric potential energy of the three-charge system.
(e) If q3 is moved along a path that is inside the rectangle but not on a diagonal, it will experience a different electric potential than if it were moved along a diagonal. Therefore, a different amount of work will be required to move q3 from B to A along this path. In general, the work required to move a charge between two points.
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A 37.3 kg crate slides down a ramp. The ramp is 3.20 m long and is at a 37.0° angle. The crate starts from rest. It experiences a constant frictional force of 12.0 N as it slides downwards. What is the speed of the crate when it reaches the bottom?
Answer:
The speed of the crate when it reaches the bottom can be calculated using the equation:
v = √(2gh)
Where v is the speed, g is the acceleration due to gravity (9.8 m/s2), h is the height of the ramp (3.20 m).
Therefore, the speed of the crate is:
v = √(2 * 9.8 * 3.20) = 7.7 m/s
35.7 Degrees Celsius to Fahrenheit
In Fahrenheit, 35.7 degrees Celsius is equivalent to 128.26 degrees.
Use the formula below for the convert 35.7 degrees Celsius to Fahrenheit:
°F = (°C x 1.8) + 32
The process of translating a temperature from one scale to another is referred to as temperature conversion. Temperature conversions between the several regularly used temperature scales, including Celsius, Fahrenheit, and Kelvin, are frequently required.
where the temperature is expressed in degrees Fahrenheit (°F) and degrees Celsius (°C).
Plugging in 35.7 degrees Celsius yields the following results:
°F = (35.7 x 1.8) + 32 °F
=> 96.26 + 32 °F
=> 128.26
As a result, 35.7 Celsius is equivalent to 128.26 Fahrenheit.
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what range of electric current generally causes death?
As a general guideline, it is believed that a current of 100 milliamperes (mA) or higher passing through the human body can be lethal. Currents of this magnitude can cause the heart to go into fibrillation or stop beating altogether, leading to death.
However, the range of electric current that generally causes death depends on various factors such as the type of current, duration of exposure, the path it takes through the body, and the health status of the person. It is important to note that even lower currents can cause serious injury, and any electric shock should be taken seriously and treated as a medical emergency.
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A block of mass 0.2 kg is launched by a spring k1 = 2.0 N/m as shown below. The block moves along a frictionless horizontal table and pushes another spring, k2 = 1.1 N/m , to the maximum deflection x . If the initial deflection of the spring k1 is 0.050 m , what is the maximum deflection of spring k2 ?
The maximum deflection of the spring k2 is approximately 0.31 m.
What is spring constant?The spring constant, k, is a measure of the spring's stiffness. It varies depending on the spring and material. The greater the spring constant, the stiffer the spring and more difficult to stretch.
To solve this problem, we can use conservation of energy and Hooke's law.
1/2 k1 x[tex]1^2[/tex] = 1/2 m [tex]v^2[/tex]
v = [tex](2 k1 x1 / m)^{0.5[/tex] = [tex](2 x 2.0 N/m x 0.050 m / 0.2 kg)^{0.5[/tex] ≈ 0.5 m/s
1/2 m [tex]v^2[/tex] = 1/2 k2 [tex]x^2[/tex]
x = [tex](m v^2/ k2)^{0.5[/tex] =[tex](0.2 kg x (0.5 m/s)^2 / 1.1 N/m)^{0.5[/tex] ≈ 0.31 m
Therefore, the maximum deflection of the spring k2 is approximately 0.31 m.
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What are examples of systematic and random errors?
Examples of systematic and random errors are Zero error in instruments, Calibration errors, Reading errors and Natural variations.
In experimental research, there are two types of errors: systematic errors and random errors.
Systematic errors are errors that are consistent and repeatable in a given experiment, and they are usually caused by flaws or limitations in the experimental design or instruments. Examples of systematic errors include:
Zero error in instruments: It refers to a situation where the instrument used to measure a quantity shows a non-zero reading even when the quantity being measured is zero. For example, a weighing scale may show a non-zero reading when nothing is placed on it.Calibration errors: It occurs when the instruments used for measurement are not calibrated properly, leading to inaccurate readings.Environmental conditions: Environmental conditions such as temperature, humidity, and pressure can also affect experimental measurements, leading to systematic errors.On the other hand, random errors are errors that are unpredictable and occur randomly in an experiment. They are usually caused by fluctuations in the experimental conditions or measurement process. Examples of random errors include:
Reading errors: It occurs when the experimenter makes mistakes in recording or interpreting the experimental data.Instrument noise: It refers to random fluctuations in the instrument readings due to the sensitivity of the instrument.Natural variations: Natural variations in the sample being measured can also lead to random errors.Learn more about errors here:
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The coefficient of friction acting upon a 945kg car is 0. 850. The car is making a 180 degree turn around a curve with a radius of 35. 0m. Determine the maximum speed with which the car can make the turn
The maximum speed at which the car can make the turn is approximately 22.3 meters per second.
Explanation:
Using the formula v = √(u * g * r), where u is the coefficient of friction, g is the acceleration due to gravity, and r is the radius of the curve, we can calculate the maximum speed of the car:
v = √(0.850 * 9.81 m/s^2 * 35.0 m) = 22.3 m/s
how to convert 45 degrees celsius to fahrenheit?
45 degrees Celsius in Fahrenheit is 113F. Fahrenheit and Celsius are related in that they are both units of temperature measurement.
The formula to convert Celsius to Fahrenheit is:
[tex]F = (C * 1.8) + 32[/tex]
Using this formula, we can calculate the conversion of 45 degrees Celsius to Fahrenheit.
First, we multiply 45 times 1.8:
45 Celsius x 1.8 = 81
Next, we add 32 to 81:
81 + 32 = 113
Therefore, conversion of 45 degrees Celsius to Fahrenheit is equal to 113 degrees Fahrenheit.
Fahrenheit was developed by German physicist Daniel Gabriel Fahrenheit in the early 1700s. It is a scale based on 0 degrees as the freezing point of water and 96 degrees as the boiling point of water.
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A hot metal sphere is dropped into a beaker of cold liquid inside an insulated container. The metal and the liquid quickly reach a common final temperature. Let the metal and the beaker of liquid be the system.In this process, does the energy of the system increase, decrease, or stay the same?a) The energy increases.b) The energy decreases.c) The energy stays the same.
From the given information, in this process the energy of the system stays the same, i.e., option c is the correct answer.
According to the law of conservation of energy, energy can neither be created nor destroyed, only transferred or converted from one form to another. In this case, the metal sphere loses heat energy as it cools down, and the liquid gains an equal amount of heat energy as it warms up. Therefore, the total amount of energy in the system remains constant throughout the process, and the energy of the system stays the same.
Since the container is insulated, there is no heat exchange with the surroundings, and no energy is transferred in or out of the system. Therefore, the energy of the system remains constant, and option c is the correct answer.
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when you step outside and feel the heat of the sun on your skin which form of heat transfer is this?
The form of heat transfer that occurs when you step outside and feel the heat of the sun on your skin is radiation.
Radiation is a type of heat transfer that occurs through electromagnetic waves. These waves can travel through a vacuum (such as space) and do not require a medium to transfer heat. In the case of the sun, it emits radiation in the form of visible light, ultraviolet light, and infrared radiation, which are all forms of electromagnetic waves. When these waves come into contact with your skin, they are absorbed by the molecules in your skin, causing them to vibrate and produce heat. This is why you feel the warmth of the sun on your skin, even though the air temperature may be relatively cool. Radiation is different from conduction and convection, which are two other forms of heat transfer. Conduction is the transfer of heat through direct contact between two objects, while convection is the transfer of heat through the movement of fluids (such as air or water). In contrast, radiation can transfer heat through empty space, and does not require a medium to transfer heat. In summary, when you step outside and feel the heat of the sun on your skin, this is an example of radiation, a form of heat transfer that occurs through electromagnetic waves.
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if 500 μl of 1-octene is reacted with an excess of borane-thf followed by a reaction with naoh and hooh and 0.387 g of octanol is isolated, what is the percent yield?
Informational Goals Do a lab procedure to investigate the connection between temperature and solubility.
What's the current temperature?According to temperature, heat energy will naturally move from a hotter body (one with a higher temperature) to a colder object (one with a lower temperature).
The velocity of these particles likewise increases as the temperature rises. A thermometers or a digital thermometer is used to determine the temperature. The SI unit for temperature, oC, is symbolised by the symbol ′T′. The Celsius scale, the Fahrenheit scale, and the Kelvin scale are the three scales that are most frequently used to measure temperature.
A Kelvin scale is what?This scale too is known as the SI temperature scale. Most of the scientific community uses it. It was created to pay tribute to renowned physicist Lord Kelvin.
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how does the length of the cord/strings affect the descent of the parachute?
"The hang time of the parachute increased with string length, as it increases the air resistance. Even while gravity was always pushing on the object, the shorter strings increased the force it was exerting."
The primary forces that affect a parachute are drag and gravity. Gravity pulls the parachute downward when you first open it, which causes it to fall quickly to the earth. However, the drag gets worse as the pace falls.
A parachute falls more slowly the more air it needs to push aside due to its larger surface area.
Air resistance increases with string length, extending hang time and delaying parachute fall. Even though gravity was always pulling on the object, the shorter ropes enhanced the power that gravity was exerting on it.
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A.25 kg can of peaches falls 2m straight down from a shelf and hits the floor with a force of 490N. How deep is the dent?
In the corresponding circumstances, 750 N and 250 N; Method (b)Mass of the block, m = 25 kg
What is mass?The amount of matter in a particle or object is represented by the dimensionless quantity mass (symbolized m). The kilogram is the International System's (SI) preferred unit of mass (kg).It is the most fundamental characteristic of matter and one of the fundamental quantities in physics. Mass is a term used to describe how much matter is there in a body. The SI unit of mass is the kilogram (kg). The mass of a body is constant over time.The best approach to grasp mass is to consider how much matter each item or body consists of. There is mass in everything that we can see. A table, a chair, your bed, a football, a glass, and even air are examples of items with mass.Mass of the man, M = 50 kg
Acceleration due to gravity, g = 10 m / s²
F = 25 × 10 = 250 N is the force exerted on the block.
The man's weight is W = 50 × 10 = 500 N.
Example (a): When the man directly raises the block
In this instance, the man pushes up by exerting force. His outward weight rises as a result.
The man's movement on the floor equals 250 + 500 = 750 N.
Scenario (b): When a pulley is used by the man to elevate the block
In this instance, the man exerts pressure downward. His apparent weight is reduced as a result.
The man's movement on the floor equals 500 - 250 = 250 N.
If a normal force of 700 N can cause the floor to give way, the guy should use the second method to easily raise the block while using less force.
The complete question is:
A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in figure What is the action on the floor by the man in the two cases? If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding.
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You research the star Sirius and find that its spectral lines are blue-shifted. What does this tell you about Sirius?a) Its surface temperature is higher than that of the sun.b) It has a transverse velocity that is toward us.c) It has a radial velocity that is toward us.d) It has a radial velocity that is away from us.e) It has a transverse velocity that is away from us.
The correct option is C. The blue-shifted spectral lines of Sirius indicate that it has a radial velocity that is towards us.
Radial velocity is a measure of the motion of an object in a straight line towards or away from an observer. In physics, it is commonly used to describe the motion of celestial bodies, such as stars and planets, as they move towards or away from the Earth.
Radial velocity is typically measured using the Doppler effect, which is the apparent shift in the frequency of electromagnetic waves due to the motion of the source of the waves. For example, if a star is moving toward the Earth, the wavelengths of light it emits will be compressed, resulting in a blue shift. Conversely, if a star is moving away from the Earth, the wavelengths of light will be stretched, resulting in a redshift.
A radial velocity is an important tool for astronomers, as it can be used to determine the distance, mass, and orbit of celestial objects. It is also used in other fields of physics, such as in the study of fluid dynamics, where it is used to describe the motion of fluids in circular or radial patterns.
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In the Makin' Waves Exploration, for a LONGITUDINAL WAVE type: how does the red line move: Left to right, or up and down?
In the longitudinal wave, the particles of the medium have to and fro motion about their mean motion which is along the direction of wave motion. So, the correct option is A.
What are Longitudinal waves?Longitudinal waves are defined as those waves in which the displacement of the medium is in the same or opposite direction to the wave propagation and the vibration of the medium is parallel or along the direction of wave travel.
Mechanical longitudinal waves are also known as compression or compression waves as they produce compression and rarefaction when passing through a material. In a longitudinal wave, the particles of the medium move about with their average speed which is in the direction of wave motion.
Hence the correct option is A.
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Your question is incomplete, most probably the complete question is :
In a longitudinal wave, the medium moves
left to rightup and downin circlesReview Constants Two 6.0cm x 6.0cm metal electrodes are spaced 1.0 mm apart and connected by wires to the terminals of a 9.0 V battery. What is the charge on each electrode? Express your answer with the appropriate units. μΑ ? o и M 2 % Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
8.09 C of charge is present on each electrode.
How charged are the electrodes? Use the relevant units to express your response. μA ?Each electrode has an 8.09 C charge (microcoulombs).
Using the equation Q = CV, where Q denotes the charge, C the capacitance, and V the potential difference, this may be determined. The formula C = A/d can be used to compute capacitance, where A is the area of the electrodes, d is the distance between them, and is the permittivity of free space.
We may calculate C as follows by plugging in the supplied values: C = (8.85 x 10-12 F/m)(0.06 m x 0.06 m)/(0.001 m) = 3.186 x 10-11 F.
Once this is done, Q = CV = (3.186 x 10-11 F)(9.0 V) = 2.8674 x 10-10 C = 8.09 C.
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Can a capacitor be used as a high pas filter? explain
Yes, a capacitor can be used as a high-pass filter. A high-pass filter is a type of electronic circuit that allows high-frequency signals to pass through while blocking or attenuating low-frequency signals.
In a high-pass filter, the capacitor is connected in series with the input signal and a resistor is connected in parallel to the output. The capacitor acts as a barrier to low-frequency signals, allowing only high-frequency signals to pass through to the output. The resistor is used to limit the output signal amplitude and to control the cutoff frequency of the filter.
The cutoff frequency of a high-pass filter is determined by the values of the capacitor and resistor in the circuit. As the cutoff frequency increases, the filter becomes more effective at blocking low-frequency signals and allowing only high-frequency signals to pass through.
Capacitors are commonly used in high-pass filters in a variety of applications, such as in audio equipment to remove low-frequency noise and in signal processing to extract high-frequency components of a signal.
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a consequence of how the earth is heated by the sun is that
The energy that the Earth receives from the Sun is the basic cause of our changing weather. Solar heat warms the huge air masses that comprise large and small weather systems.
The Sun is a massive, luminous ball of gas at the center of our solar system. It is the closest star to Earth, located approximately 93 million miles away. The Sun is made up of primarily hydrogen and helium, with small amounts of other elements.
In physics, the Sun is studied in terms of its energy production, which is generated by nuclear fusion reactions in its core. These reactions involve the fusion of hydrogen atoms to form helium, releasing enormous amounts of energy in the process.
The Sun's energy output drives the weather and climate on Earth, and its magnetic field influences space weather and the behavior of charged particles in the solar system. The study of the Sun and its effects on the Earth and other planets is a crucial field of research in astrophysics, with important implications for understanding the origins and evolution of the solar system, and for developing technologies that can harness solar energy.
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