3 years ago

What makes metal a good conductor?

Physics

1 answer:

ra1l [238]3 years ago

6 0

Answer:

It is one of the strongest materials in the world and can hold anything

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A solid sphere of radius R is made of an insulating material. It holds a charge, Q, which is distributed evenly throughout the s

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Answer:

The magnitude of Electric Field is $E=\dfrac{Qr}{4\pi \epsilon_0 R^3}$

Explanation:

Given:

Radius of the solid sphere=R
Total charge of the sphere=Q

Let consider a Gaussian surface at a distance of r such that 0<r>R in the shape of sphere such that the electric Field due to this E and it is radially outwards.

The charge inside this Gaussian surface volume we have , $q_{in}=\dfrac{Qr^3}{R^3}$

Now using Gauss Law we have

$E\times4\pi r^2=\dfrac{q_{in}}{\epsilon_0}\\E\times4\pi r^2=\dfrac{\dfrac{Qr^3}{R^3}}{\epsilon_0}\\E=\dfrac{Qr}{4\pi \epsilon_0 R^3}$

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The sun was shining on the sand heating it up causing ot to become hot

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two forces are acting on a wheelbarrow. One force is pushing to the right and an equal force is pushing to the left. What can yo

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A stone that starts at rest free falls for 7.0 s. How far does the stone fall in this time?

vredina [299]

Gravitational acceleration is approx 9.8 m/s
Time is 7s

a=9.8 m/s
t=7s

a = d/t^2

therefore:

d = a * t^2

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d = 9.8 * 49

d = 480.2 [m]

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