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2 years ago

Which of the following calls one might hear a refree make?

Physics

2 answers:

NemiM [27]2 years ago

8 0

The answer is d all of the above

mestny [16]2 years ago

7 0

Answer: D) All of the above

Explanation:

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The electrons equal or copy the number of _____

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Protons copy the number equal

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A non-conducting sphere of radius R = 3.0 cm carries a charge Q = 2.0 mC distributed uniformly throughout its volume. At what di

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Answer:

$r =3 *\sqrt{2} = 4.24 cm$

Explanation:

given data

Radius of sphere 3.0 cm

charge Q = 2.0 m C

We know that maximum electric field is given as

$E_{MAX}= \frac{KQ}{r^{2}}$

electric field inside the sphere can be determine by using below relation

$\frac{KQ}{r^{2}}= \frac{1}{2}*\frac{KQ}{R^{2}}$

$r = \sqrt{2}R$

$r =3 *\sqrt{2} = 4.24 cm$

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An incident ray through the focal point of a spherical mirror will:

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Reflect parallel of the principal axis

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