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3 years ago

The charge that passes a cross-sectional area A=10-4 m2 varies with time according

Physics

1 answer:

Anarel [89]3 years ago

6 0

Answer:

Current = dQ/dt

or I = dQ/dt

Where I represents current.

Which is the rate of flow of charge.

Q=4 + 2t + t²

dQ/dt = 2 + 2t --- This is the relation that gives the instantaneous current.

At time t=2sec

dQ/dt = I = 2 + 2t

= 2 + 2(2)

=2 + 4

= 6A.

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3 years ago

A ball is thrown vertically upward with a speed of 27.9 m/s from a height of 2.0 m. How long does it take to reach its highest p

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Answer:

2.84403 seconds

2.91483 seconds

Explanation:

t = Time taken

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v = Final velocity

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The ball takes 2.91483 seconds to hit the ground after it reaches its highest point.

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2 years ago

What is the atomic number of this element?

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3 years ago

Read 2 more answers

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 3.33Ã—Ã—10âˆ

AlekseyPX

Answer:

There are 756.25 electrons present on each sphere.

Explanation:

Given that,

The force of repression between electrons, $F=3.33\times 10^{-21}\ N$