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3 years ago

For a cylindrical capacitor, the capacitance does not depend on which of the following values?

Physics

1 answer:

IgorC [24]3 years ago

5 0

Answer:

Capacitance of cylindrical capacitor does not depends on the amount of charge on the conductors

Explanation:

Consider a cylindrical capacitor of length L, inner radius R₁ and outer radius R₂, permitivity ε₀ constant then capacitance of cylindrical capacitor is given by:

$C=\frac{2\pi \epsilon_{o}L}{ln\frac{R_{2} }{R_{1}} }$

From this equation it is clear that capacitance of cylindrical capacitor is independent of the amount of charge on the conductors where as directly proportional permitivity constant and length of cylinder where as inversely proportional to natural log of ratio of R₂ and R₁

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What is the net force acting on an object?

vodka [1.7K]

Answer:

If two forces act on an object in the same direction, the net force is the sum of the two forces. In this case, the net force is always greater than either of the individual forces.

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2 years ago

Read 2 more answers

If Galileo drops a cannon ball from the 60 meter high) Leaning Tower of Pisa, how fast will it be moving when it hits the ground

viva [34]

Answer:

When the ball hits the ground, the velocity will be -34 m/s.

Explanation:

The height and velocity of the ball at any time can be calculated using the following equations:

y = y0 + v0 · t + 1/2 · g · t²

v = v0 + g · t

Where:

y = height of the ball at time "t".

y0 = initial height.

v0 = initial velocity.

t = time.

g = acceleration due to gravity. (-9.8 m/s² considering the upward direction as positive).

v = velocity at time "t".

If we place the origin of the frame of reference on the ground, when the ball hits the ground its height will be 0. Then using the equation of height, we can calculate the time it takes the ball to reach the ground:

y = y0 + v0 · t + 1/2 · g · t²

0 = 60 m + 0 m/s · t - 1/2 · 9.8 m/s² · t²

0 = 60 m - 4.9 m/s² · t²

-60 m / -4.9 m/s² = t²

t = 3.5 s

Now, with this time, we can calculate the velocity of the ball when it reaches the ground:

v = v0 + g · t

v = 0 m/s - 9.8 m/s² · 3.5 s

v = -34 m/s

When the ball hits the ground, the velocity will be -34 m/s.

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3 years ago

the temperature of the water is less than the temperature of its surroundings. Explain in terms of the particles of the water, w

belka [17]

Metal conducts heat quicker than wood or air so when you touch it heat is taking away from you body faster than when you touch the wood desk. When heat is taken from our bodies our brain interprets this as cold.

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3 years ago

4. An object has a mass in air of 0.0832 kg, apparent mass in water of 0.0673 kg, and apparent mass in another liquid of 0.0718

Dmitry_Shevchenko [17]

Question

4. An object has a mass in air of 0.0832 kg, apparent mass in water of 0.0673 kg, and apparent mass in another liquid of 0.0718 kg. What is the specific gravity of the other liquid

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Answer:

Explanation:4. An object has a mass in air of 0.0832 kg, apparent mass in water of 0.0673 kg, and apparent mass in another liquid of 0.0718 kg. What is the specific gravity of the other liquid

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2 years ago

A student makes a short electromagnet by winding 580 turns of wire around a wooden cylinder of diameter d = 2.1 cm. The coil is

Mashutka [201]

Answer:

1.02453 Am²

0.36834 m

Explanation:

N = Number of turns = 580

d = Diameter = 2.1 cm

r = Radius = $\frac{d}{2}=1.05\ cm$

A = Area = $\pi r^2$

I = Current = 5.1 A

B = Magnetic field = 4.1 μT

x = Distance

$\mu_0$ = Vacuum permeability = $4\pi \times 10^{-7}\ H/m$

Magnetic dipole moment is given by

$\mu=NIA\\\Rightarrow \mu=580\times 5.1\times \pi\times 0.0105^2\\\Rightarrow \mu=1.02453\ Am^2$

The magnitude of the magnetic dipole moment of this device is 1.02453 Am²

Magnetic field is given by

$B=\frac{\mu_0NIA}{2\pi x^3}\\\Rightarrow x=\left(\frac{\mu_0NIA}{2\pi B}\right)^{\frac{1}{3}}\\\Rightarrow x=\left(\frac{4\pi\times 10^{-7}\times 580\times 5.1\times \pi\times 0.0105^2}{2\pi 4.1\times 10^{-6}}\right)^{\frac{1}{3}}\\\Rightarrow x=0.36834\ m$

The axial distance is 0.36834 m

7 0

3 years ago