4 years ago

if a person pushes against a wall with all of their might until they are completely exhausted, how much work was done?

1 answer:

4 0

No work was done. If you push hard against a wall, you will eventually get very tired, but you will not do any work unless you actually move the wall in the direction you are pushing.

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Answer:

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Explanation:

For constructive interference, the expression is:

$d\times sin\theta=m\times \lambda$

Where, m = 1, 2, .....

d is the distance between the slits.

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Angle, $\theta$ = 15.8°

First bright fringe means , m = 1

So,

$d\times sin\ 15.8^0=1\times \597\ nm$

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Also,

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1 µm = 10⁻⁶ m

So,

1 nm = 10⁻³ nm

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