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Elanso [62]
2 years ago
7

How many electrons are there in 3.5 x 10" C?

Physics
1 answer:
Masja [62]2 years ago
4 0

Answer:

2.19\cdot 10^{20} electrons

Explanation:

I assume you mean:

How many electrons are there in 3.5\cdot 10^{1}C?

Solution:

The charge of one electron is (in magnitude)

e=1.6\cdot 10^{-19}C

The charge in this problem is

Q=3.5\cdot 10^{1} C

So, we can find how many electrons are in this charge by simply dividing the total charge by the charge of one electron:

n=\frac{Q}{e}=\frac{3.5\cdot 10^{1}}{1.6\cdot 10^{-19}}=2.19\cdot 10^{20}

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A car accelerates from rest to a velocity of 5 meters/second in 4 seconds. What is its average acceleration over this period of
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Answer:

1. False

2. True

3. True

Explanation:

1- False —> The relation between electric potential and electric field is given such that

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Therefore, for a uniform E field, electric potential is linearly proportional to the distance.

2- True —> The electric field lines always cross the equipotential lines perpendicularly.

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Explanation:

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