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3 years ago

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Willa, the cartoon witch, dusts her crystal ball with her silk scarf, causing it to become charged with 5.0 x 10^ -9 C. Willa th

en stares into the crystal ball and the wart on the end of her nose experiences an electric field strengths of 2200 N/C. How far is the trip of her nose from the center of the crystal ball?

1 answer:

DIA [1.3K]3 years ago

3 0

Answer:

The distance between the tip of her nose from the center of the crystal ball is 14.3 cm.

Explanation:

Given that,

Charge, $q=5\times 10^{-9}\ C$

The end of her nose experiences an electric field strengths of 2200 N/C

It is required to find the distance between the tip of her nose from the center of the crystal ball. The formula of the electric field is given by :

$E=\dfrac{kq}{r^2}$

r is distance

$r=\sqrt{\dfrac{kq}{E}} \\\\r=\sqrt{\dfrac{9\times 10^9\times 5\times 10^{-9}}{2200}} \\\\r=0.143\ m\\\\r=14.3\ cm$

So, the distance between the tip of her nose from the center of the crystal ball is 14.3 cm.

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Explanation:

a) The specific heat capacity means the amount of heat needed by a unit mass of a material to increase its temperature in one unit.

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$Q = 7800\,J$

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