answer
is 1 kw is the answer
How much force is required to keep a 2-kg object moving to the right with a constant speed of 6.0 m/s?
A. 0 m/s
B. .33 m/s
C. 3 m/s
D. 12 m/s
The force required to keep a 2 kg object moving to the right with a constant speed of 6.0 m/s is calculated to be 0 N.
It is given that the mass of the object m is 2 kg.
As the body is said to be moving with constant speed, its acceleration would be rate of change of velocity, which would be zero.
Acceleration a = 0
Now, let us calculate the force required to move the 2 kg object. From Newton's second law, we know the expression, F = m a.
where,
m is mass
a is acceleration
F = m a = 2 × 0 = 0 N
Thus, the required force to move the object in right direction is calculated to be 0 N.
The given options have inappropriate units. They should be in Newtons.
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What does voter turnout mean?
Voter turnout refers to the percentage of eligible voters who participate in an election by casting a ballot
It is a measure of civic engagement and political participation, and is an important indicator of the health and vibrancy of a democracy.
Voter turnout can be influenced by a variety of factors, including the perceived importance of the election, the accessibility of polling places, the quality of candidates and political campaigns, and the effectiveness of voter education and mobilization efforts.
Low voter turnout is often a cause for concern, as it can lead to a lack of legitimacy for elected officials and a sense of disconnection and apathy among the electorate. High voter turnout, on the other hand, is seen as a positive sign of a healthy and engaged democracy.
In many countries, efforts are made to increase voter turnout through measures such as early voting, mail-in ballots, and voter registration drives
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any change in the speed or direction of an object is called
Answer:Acceleration
Explanation: The change in the speed or direction of an object is called Acceleration, Objects that are changing their speed or their direction are said to be accelerating.
Answer:
acceleration :)
Explanation:
any change
As part of a physics experiment, you stand on a bathroom scale in an elevator.Though your normal weight is 610N ,the scale at the moment reads 710N.IS the acceleration of the elevator upward, downward or zero? Calculate the magnitude of the elevator's acceleration. What if anything , can you say about the velocity of the elevator? Explain
The elevator could be moving upward with increasing velocity, upward with constant velocity, or even downward with decreasing velocity. We would need additional information to determine the velocity of the elevator.
What is Velocity?
Velocity is a vector quantity that describes the rate at which an object changes its position in a particular direction. It is defined as the change in position (displacement) of an object divided by the time taken to make that change. In other words, an object's velocity can change even if its speed remains the same, as long as the direction of motion changes.
The scale reads a value of 710N which is greater than the normal weight of the person (610N). This means that there must be an additional force acting on the person in the upward direction. Since the only forces acting on the person are gravity and the normal force provided by the scale, the additional force must be the force due to the upward acceleration of the elevator.
To calculate the magnitude of the elevator's acceleration, we need to use the equation:
ΣF = ma
where ΣF is the net force acting on the person, m is the mass of the person, and a is the acceleration of the elevator.
Here, the net force acting on the person is the difference between the reading on the scale (710N) and the weight of the person (610N):
ΣF = 710N - 610N = 100N
The mass of the person can be calculated using the formula:
m = F/g
where F is the weight of the person and g is the acceleration due to gravity (approximately 9.81 m/s²):
m = 610N / 9.81 m/s² = 62.2 kg
Now, we can use the equation ΣF = ma to calculate the acceleration of the elevator:
100N = 62.2 kg x a
a = 1.61 m/s²
Therefore, the magnitude of the elevator's acceleration is 1.61 m/s² upward.
Regarding the velocity of the elevator, we cannot say anything with certainty based on this information alone. The elevator could be moving upward with increasing velocity, upward with constant velocity, or even downward with decreasing velocity. We would need additional information to determine the velocity of the elevator.
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A 12-cm-long thin rod has the nonuniform charge density λ(x)=(2nc/cm)e−|x|/(6. 0cm), where x is measured from the center of the rod. What is the total charge on the rod?
The total charge is Q= 15.171nC is measured from the center of the rod.
So, the edges of the rod correspond to
x=-6 and x=6.
[tex]Q= 2\int\limits^6_0 {2exp(-x/6)} \, dx[/tex]
Taking into account that
|x|=-x for x<0
and |x|=x for x >=0
Thus, the total charge is given by:
[tex]Q= 2\int\limits^6_0 {2exp(-x/6)} \, dx[/tex]
When we integrate, we get:
Q= 24(1- exp(-1))nC ≈ 15.171nC
Density is a fundamental physical quantity that describes the mass of a substance per unit volume. It is typically denoted by the symbol "ρ" and is expressed in units of kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).
In simple terms, density can be thought of as how tightly packed the particles of a substance are. A substance with a high density has particles that are tightly packed together, while a substance with a low density has particles that are more spread out.
Density plays a crucial role in many areas of physics, including mechanics, fluid dynamics, and thermodynamics. For example, density is used to calculate the buoyant force on an object in a fluid, which is important in understanding how objects float or sink. It is also used to calculate the pressure and temperature of gases in the atmosphere and the behavior of materials in different physical conditions.
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You are a member of an alpine rescue team and must get a box of supplies, with mass 2.50 kg, up an incline of constant slope angle 30.0° so that it reaches a stranded skier who is a vertical distance 3.50 m above the bottom of the incline. There is some friction present; the kinetic coefficient of friction is 6.00x10^-2. Since you can't walk up the incline, you give the box a push that gives it an initial velocity; then the box slides up the incline, slowing down under the forces of friction and gravity. Take acceleration due to gravity to be 9.81 m/s^2Hint 1. How to approach the problem Hint 2. Find the total work done on the box Hint 3. Initial kinetic energy Hint 4. What is the final kinetic energy?
Answer:
Wtotal = KEfinal - KEinitial
42.81 J + 1.47 N * u^2 * 1.70 m/kg
Explanation:
To solve this problem, we can use the work-energy principle, which states that the net work done on an object is equal to its change in kinetic energy. We can break the problem down into several steps to determine the total work done on the box and its final kinetic energy.
Step 1: Find the work done by gravity
The gravitational force acting on the box as it moves up the incline is given by Fg = mgsin(theta), where m is the mass of the box, g is the acceleration due to gravity, and theta is the angle of the incline. The work done by gravity over a vertical distance h is given by Wg = Fg*h. Plugging in the values given in the problem, we get:
Fg = 2.50 kg * 9.81 m/s^2 * sin(30.0°) = 12.23 N
Wg = Fg * 3.50 m = 42.81 J
Step 2: Find the work done by friction
The frictional force acting on the box is given by Ff = mgcos(theta)mu, where mu is the kinetic coefficient of friction. The work done by friction over a horizontal distance s is given by Wf = Ffs. Since the box starts from rest and comes to a stop, the work done by friction must be equal to the initial kinetic energy of the box. Plugging in the values given in the problem, we get:
Ff = 2.50 kg * 9.81 m/s^2 * cos(30.0°) * 6.00x10^-2 = 1.47 N
Wf = Ff * s
To find the distance s, we can use the fact that the box comes to a stop at the highest point of its trajectory, where its final velocity is zero. Using the equations of motion, we can find the distance s:
v^2 - u^2 = 2as
where v is the final velocity (0 m/s), u is the initial velocity, a is the acceleration (given by Ff/m), and s is the distance traveled.
Plugging in the values given in the problem, we get:
0 - u^2 = 2 * (1.47 N) / 2.50 kg * s
s = u^2 / (2 * (1.47 N) / 2.50 kg) = u^2 * 1.70 m/kg
Step 3: Find the total work done on the box
The total work done on the box is the sum of the work done by gravity and the work done by friction:
Wtotal = Wg + Wf = 42.81 J + Ff * s
Plugging in the values of Ff and s, we get:
Wtotal = 42.81 J + 1.47 N * u^2 * 1.70 m/kg
Step 4: Find the initial kinetic energy and final kinetic energy
The initial kinetic energy of the box is given by KE = 1/2 * m * u^2, where m is the mass of the box and u is the initial velocity. The final kinetic energy of the box is zero, since it comes to a stop at the highest point of its trajectory.
Therefore, the initial kinetic energy is:
KE = 1/2 * 2.50 kg * u^2
And the final kinetic energy is:
KE = 0 J
Putting it all together, we get:
Wtotal = KEfinal - KEinitial
42.81 J + 1.47 N * u^2 * 1.70 m/kg
this golfer is demonstrating what kind of energy?
This golfer is demonstrating Kinetic energy.
Kinetic energy is the force that an object has as a result of its movement. If we want to speed up an object, we must apply force to it. Using force demands us to put in the effort. After work is completed, energy is transferred toward the entity, and the object moves at a new consistent speed.
Kinetic energy describes the energy of movements, which can be seen as an entity or subatomic particle moving. Kinetic energy exists in every moving vehicle and particle. Kinetic energy is demonstrated by a woman walking, a crumb falling from a table and a charged atom in an electric field.
Kinetic energy is the energy held by a moving object. As we've seen, kinetic increases as mass and/or speed increase, and KE remains constant unless an object accelerates or decelerates. Kinetic energy is classified into two types: translational energy is converted into kinetic and angular momentum energy.
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how many bushels of barley are used to make beer for the super bowl
325.5 million gallons of beer will be freely consumed. So, the brews for the game require the usage of 6 million,145 thousand 132.74 bushels of barley, making the farmers of this grain the true MVP.
What do u meant by bushels?The acronyms "bsh" or "bu" are used to refer to a bushel, an imperial and US customary volume unit that is based on an older measurement of dry capacity.
The old bushel, which is equal to 2 kennings (obsolete), 4 pecks, or 8 dry gallons, was most frequently used for agricultural products like wheat. In common usage today, the volume is nominal, with bushels denoting a mass that varies depending on the commodity.
The term "bushel" is sometimes used to translate equivalent units in various measurement systems.
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for a pair of objects, the center of mass is located_________
For a pair of objects, the center of mass is located at a point between the two objects where the total mass of the system is concentrated.
The center of mass is the average position of all the particles in the system, weighted by their respective masses.
The location of the center of mass depends on the relative masses and positions of the objects in the system. For example, if two objects have equal masses and are located at the same distance from each other, the center of mass will be located at the midpoint between them. However, if the objects have different masses or are located at different distances from each other, the center of mass will be located closer to the more massive or more distant object.
The concept of center of mass is important in many areas of physics, including mechanics, astronomy, and fluid dynamics. It is used to describe the motion of systems of particles, such as planets orbiting around a star or a projectile moving through the air.
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what is potential energy equation spring?
The potential energy stored in a spring (PE) is given by the equation PE = (1/2) kx², where k is the spring constant (a measure of how stiff the spring is) and x is the displacement of the spring from its equilibrium position.
This equation shows that the potential energy stored in a spring is proportional to the square of its displacement from equilibrium. As the spring is compressed or stretched, it stores potential energy that can be released when the spring is allowed to return to its equilibrium position. This equation is used in many applications, including mechanical engineering, physics, and even in the design of toys and gadgets.
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calculate the average kinetic energy for 1.00 mol he atoms at 300. k.
According to the kinetic molecular theory, the temperature of a material is proportional to the total kinetic energy of its particles. The average kinetic energy for 1.00 mol he atoms at 300 K is 3741.3 J mol⁻¹.
What is average kinetic energy?The average energy possessed by the gas particles which are in motion is defined as the average kinetic energy. The average kinetic energy of the gas molecules is proportional to the absolute temperature of the gas.
The equation of average kinetic energy for one mole of any gas is:
Average kinetic energy = 3/2 nRT
3/2 × 1 × 8.314 × 300
= 3741.3 J mol⁻¹
Thus the average kinetic energy for 1.00 mol He atoms is 3741.3 J mol⁻¹.
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What is units of joules?
Answer: kgm^2/s^2 for SI units, or J for short
Explanation:
this is pretty self explanatory and I don’t think I could break it down further
What is the equation to find the equivalent resistance, Req, of two resistors in series, R1 and R2?Group of answer choicesA) Req = R1 + R2B) Req = 1/R1 + 1/R2C) R1 = R2D)Req = 2R
Option A, Req = R1 + R2, is the correct equation for calculating the equivalent resistance of two resistors in series.
The equation to find the equivalent resistance, Req, of two resistors in series, R1 and R2, is:
Req = R1 + R2
In a series circuit, resistors are connected end-to-end so that the current flows through one resistor and then the other. The total resistance in the circuit is equal to the sum of the individual resistances. Therefore, the equivalent resistance of two resistors in series is simply the sum of their individual resistances.
Option A, Req = R1 + R2, is the correct equation for calculating the equivalent resistance of two resistors in series. Option B, Req = 1/R1 + 1/R2, is the equation for calculating the equivalent resistance of two resistors in parallel. Option C, R1 = R2, is not an equation for finding equivalent resistance. Option D, Req = 2R, is not the correct equation for finding the equivalent resistance of two resistors in series.
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how to 37 degrees celsius to fahrenhei?
Two weeks have passed since the new moon. We see the entire face of the moon shining. answer choicesa. Full Moon
b. Half moon
The current phase of the moon is a Full Moon, if two weeks have passed since the new moon.
The Moon's appearance changes as it orbits around the Earth, causing different amounts of its illuminated surface to be visible from our perspective on Earth. A Full Moon occurs when the entire face of the Moon is illuminated by the Sun, and it appears as a fully round and bright circle in the night sky.
Two weeks have passed since the new moon, which is the halfway point in the lunar cycle when the Moon is between the Earth and Sun and is not visible from Earth. Therefore, if we can see the entire face of the Moon shining, it must be a Full Moon.
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what instrument is used to measure relative humidity?
A device called a hygrometer is used to measure relative humidity.
Hygrometers come in various types, but the most common ones are the psychrometer and the electronic hygrometer. They measure relative humidity.
A psychrometer consists of two thermometers, one dry and the other wet, that are attached to a handle. The wet thermometer has a cotton wick wrapped around its bulb, which is soaked in distilled water. The dry thermometer measures the ambient air temperature, while the wet thermometer measures the air temperature as affected by the evaporation of the water from the wick. The difference between two readings calculates relative humidity.
Electronic hygrometers use a sensor to measure the dew point temperature, which is the temperature at which the air becomes saturated and condensation occurs. The sensor then calculates the relative humidity based on the difference between the dew point temperature and the ambient air temperature.
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As the sound propagates from one place to the other in air ,the air itself is not required to move from one place to the other
True, As the sound propagates from one place to the other in air ,the air itself is not required to move from one place to the other.
How does sound move from one location to another?
Parts of the medium that a sound is traveling through alternately compress and expand as it does so. According to science, sound is a vibration that moves through a transmission medium like a gas, liquid, or solid as an acoustic wave.
Therefore, only the energy of the moving particles is transferred during the creation of sound, not the actual particles themselves. Therefore, it is true that the air does not necessarily need to shift from one location to another in order for the sound wave to travel from one to the other.
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What is the equation to find the equivalent resistance, Req, of two resistors in series, R1 and R2?Group of answer choicesReq = R1 + R2Req = 1/R1 + 1/R2R1 = R2Req = 2R
When two resistors are connected in series, their equivalent resistance can be found using the equation: Req = R1 + R2
When two resistors are connected in series, their equivalent resistance can be found using the equation:
Req = R1 + R2
where R1, R2 are resistor values measured in ohms
This equation applies because in a series circuit, the current passing through each resistor is the same, but the voltage drop across each resistor is proportional to its resistance. The total voltage drop across the two resistors is equal to the voltage of the power source, and the sum of the voltage drops across each resistor is equal to the total voltage drop. Therefore, the sum of the resistances is equal to the equivalent resistance.
It's important to note that this equation only applies to resistors connected in series. When resistors are connected in parallel, the equivalent resistance is found using a different equation, which takes into account the inverse relationship between resistance and current.
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how to 3600 seconds to minutes?
3600 seconds to minutes is equal to 60 minutes which is equal to an hour. Minutes are a unit of time, measured in increments of 1/60th of an hour. One minute is equal to 60 seconds.
The conversion from seconds to minutes can be calculated by dividing the number of seconds by 60.
Formula:
Minutes = Seconds ÷ 60
For 3600 seconds:
Minutes = 3600 ÷ 60
Minutes = 60 minutes
Time is a measure of the duration, between two events or points in time. It is often defined as the indefinite continued progress of existence and events that occur in an apparently irreversible succession from the past, through the present, to the future.
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how to convert lbs to newtons
To convert pounds (lbs) to newtons, you can use the following conversion factor: 1 pound = 4.44822 newtons
"Pounds weight" as a unit of measurement, then it's a term that has been used historically in the English system of weights and measures. In this system, the pound (lb) was defined as a unit of mass, not weight, and was originally based on the weight of a grain of barley.
However, because weight is the force exerted on an object by gravity, the weight of an object can vary depending on the strength of gravity in a particular location. To address this, a "pounds weight" was introduced as a way to standardize weight measurements in different locations.
So, to convert x pounds to newtons, you can use the formula:
x pounds * 4.44822 newtons/pound = y newtons
For example, if you want to convert 50 pounds to newtons, you can use the formula:
50 pounds * 4.44822 newtons/pound = 222.41 newtons
Therefore, 50 pounds is equivalent to 222.41 newtons
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what term refers to the tint of light? continuous light
Intensity. the color's radiance or dullness. Tint: The light value of a color created by mixing in white. Any hue or pure color combination to which white has been added is referred to as a tint.
What does tint go by?A shade is a mixing with black, which enhances darkness, whereas a tint is a blend of a color with white, which increases brightness. Both procedures have an impact on the relative saturation of the final color mixture.
What does shade and tint in art mean?A tint is produced when a color is added to white to produce a lighter version of the original color. Pink is one type of hue. To darken a color, an artist can add black to create a shade.
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how to convert lbs in ton
To convert pounds (lbs) to tons, you can use the conversion factor:1 ton = 2000 lbs, This means that one ton is equivalent to 2000 pounds of weight.
The pound (lb) is a unit of weight commonly used in the United States and other countries that still use the imperial system of units. In this system, the pound is defined as a unit of force or weight, and is equivalent to 16 ounces (oz).
However, it's worth noting that the pound is not a unit of mass, which is a measure of the amount of matter in an object, but rather a unit of weight, which is the force exerted on an object due to gravity. In other words, the weight of an object can vary depending on the strength of gravity in a particular location.
To convert from pounds to tons, divide the value in pounds by the conversion factor of 2000. For example, to convert 5000 pounds to tons:
5000 lbs = 5000/2000 tons
5000 lbs = 2.5 tons
Therefore, 5000 pounds is equivalent to 2.5 tons of weight.
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how many grams is in a quarter pounder
The one quarter pounder quantity will be equivalent to the approximately 113.4 grams.
A pound or pound-mass is a unit of mass or weight used in the British Imperial and American customary systems of measurement. It is also a unit of measure, 1 pound = 16 ounces. So one quarter pound equals 4 ounces. A gram is a unit of mass or weight in the International System of Units. Hence, both are units of mass or weight. We have to convert quater pounder in grams. To convert from one unit to another always a constant number is used which is called conversion factor. Now, ounces to grams, we can use the conversion factor that one ounce = 28.3495 grams.
So, to calculate required grams are in a quarter pound, we can multiply 4 ounces by the conversion factor, quarter pounder = 4 ounces × 28.3495 grams/ounce = 113.398 grams. Hence, the required value is approximately 113.4 grams.
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How to convert 97.4 f to c?
97.4°F is equivalent to 36.33°C temperature. Using formula: °C = (°F - 32) x 5/9.
A measure of something's heat or coldness is its temperature. The most often used temperature scales globally are Celsius (°C) and Fahrenheit (°F), while there are other scales as well.
To convert Fahrenheit to Celsius, you need to subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9. This formula works because the freezing point of water is 32°F and 0°C, and the boiling point of water is 212°F and 100°C. So, a change of 1 degree Fahrenheit is equivalent to a change of 5/9 degree Celsius.
To convert 97.4°F to Celsius (°C), you can use the following formula:
°C = (°F - 32) x 5/9
Substituting 97.4 for °F in the formula, we get:
°C = (97.4 - 32) x 5/9 = 36.33
Therefore, 97.4°F is equivalent to 36.33°C.
It's important to note that when converting Fahrenheit to Celsius, the resulting Celsius temperature is often more precise with decimal places. In this case, the Celsius temperature is 36.33°C, which means that the temperature is between 36°C and 37°C.
To double-check your conversion, you can also use online temperature conversion tools or smartphone apps that are readily available and accurate.
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term for the negatively charged subatomic particle
Answer:
Explanation:
Electron
what is units in pascal?
In the International System of Units (SI), pressure or stress is measured in pascals (Pa). It bears Blaise Pascal's name, a mathematician and physicist. Applied force of one newton per square meter (N/m²) is equal to one pascal (P).
The force spread across an area is known as pressure. It is expressed in pascals in the system of meters, kilograms, and seconds. A pascal specifically measures the pressure that 1 N of force exerts on a 1 m² area at a straight angle. The following is how pressure can be described mathematically: pressure = force /area. A pascal is defined as follows if F is measured in newtons and A in square metres: 1 Pa = 1 N/m², also known as 1 N x m-² or 1 N per m². When measuring pressure changes in ultralow gas pressure applications like ventilation systems, a pascal comes in handy. The component is used by geophysicists to investigate tectonic forces on the plates of the Earth.
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How many mA is 1amp?
There are 1000 milliampere in 1 Ampere.
Ampere is the unit of measurement of electric current. Electric current is the flow of electrons in any substance. This means that 1 Ampere is the unit of measure of the rate of the flow of electrons in any electric conductor.
On the meter scale of measurement, we have the prefixes which are used to denote how many orders of magnitude are equivalent to bigger and smaller quantities. Milli- is used for denoting quantities of smaller value. They are of the order of magnitude -3. So, as a result, there are 1000 milliampere in 1 Ampere.
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Can you choose whether or not each type of glassware can be heated test tubes?
Yes, the ability to heat different types of glassware can vary based on their material and design. Test tubes can be made of different materials, such as borosilicate glass or plastic, and can have different shapes and sizes. It is important to choose the appropriate type of test tube based on the experimental needs, and to check if the material is able to withstand the temperature and pressure changes during heating. Therefore, you can choose whether or not to heat certain types of test tubes, based on their material and the experimental requirements.
A hemispherical bowl of radius R is placed in a uniform magnetic field that has magnitude B0 and is in the positive z direction. The open top of the bowl is in the xy plane.
Part A
Obtain an expression for the magnetic flux through the hemispherical surface of the bowl.
Express your answer in terms of some or all of the variables B0, R, and the constant ?.
An expression for the magnetic flux through the hemispherical surface of the bowl is [tex]\phi = 2 \pi B0R^2[/tex].
The magnetic flux through the hemispherical surface of the bowl can be calculated using the formula:
Φ = ∫B · dA
here Φ is magnetic flux,
B is magnetic field, and
dA is an element of the surface area.
For a hemispherical surface of radius R, we can express the surface area element in terms of polar coordinates as:
[tex]dA = R^2 sin\theta d\theta d\phi[/tex]
here,
[tex]\theta[/tex] ranges from 0 to [tex]\pi/2[/tex] and φ ranges from 0 to [tex]2\pi[/tex].
Since the magnetic field is uniform and in the positive z direction, we can express it as:
B = B0k
here k is the unit vector in the z direction.
these expressions into the formula for magnetic flux, we get:
Φ = ∫B · dA
= [tex]B0k · \int\R^2 sin\theta d\theta d\theta[/tex]
= [tex]B0k * (2\pi) * \int\0\pi/2 R^2 sin\theta d\thetaθ[/tex]
Solving the integral, we get:
[tex]Φ = B0k * (2\pi) * (-R^2 cos\theta ) ∣0\pi/2[/tex]
= [tex]B0k * (2/\pi) * R^2[/tex]
Therefore, the magnetic flux through the hemispherical surface of the bowl is given by [tex]\phi = 2\pi B0R^2[/tex], where B0 is the magnitude of the magnetic field and R is the radius of the bowl.
In summary, the expression for the magnetic flux through the hemispherical surface of the bowl is [tex]\phi = 2\pi B0R^2[/tex], where B0 is the magnitude of the magnetic field and R is the radius of the bowl.
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What is the measure of how hard it is to stop an object in motion?
Answer:
Momentum A measure of how hard it is to stop a moving object. Related to both mass and velocity.