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dimulka [17.4K]
3 years ago
15

2. (1 point) Two metal spheres with different radii are each hanging from insulating nylon threads. One of the spheres has a net

negative charge, while the other has no net charge. If the spheres are close together but do not touch, they will: A. attract each other B. repel each other C. repel if the sphere with the larger radius is the one that is negatively charged D. repel if the sphere with the smaller radius is the one that is negatively charged E. exert no force on each other
Physics
1 answer:
DiKsa [7]3 years ago
6 0

Answer:

A. attract each other

Explanation:

When the neutral sphere is brought close to the negatively charged, as charges can move freely in a conductor, some electrons will be repelled, leaving a net positive charge (equal in magnitude ot the charge in the other sphere) on the surface of the neutral sphere, which will cause that both spheres attract each other.

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dimaraw [331]
<h3><u>Answer;</u></h3>

D) Standing wave

<h3><u>Explanation;</u></h3>
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A 6.00-kg box is sliding to the right across the horizontal floor of an elevator. The coefficient of kinetic friction between th
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3 years ago
All ball is thrown up with a vertical velocity of 54 m/s and a horizontal velocity of 39 m/s. Calculate how many seconds it will
VikaD [51]

5.5 s

Explanation:

The time it takes for the ball to reach its maximum height can be calculated using

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t = \dfrac{(54\:\text{m/s})}{(9.8\:\text{m/s}^2)} = 5.5\:\text{s}

8 0
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The metal ions in iron are held together by
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allochka39001 [22]

Answer:

ni = 2.04e19

Explanation:

we know that in semiconductor like intrinsic, when electron leave the band, it leave a hole in valence band so we have

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\sigma = n\left | e \right | \mu_e + n\left | e \right | \mu_h

\sigma = ni\left | e \right | \mu_e  + ni\left | e \right | \mu_h

\sigma = ni \left | e \right | ( \mu_e + \mu_h)

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ni = 2.014 *10^{19} m^{-3}

ni = 2.04e19

5 0
2 years ago
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