haileywebb8
31.07.2019 •
Physics
At the instant that the velocity of the crate is v⃗ =(3.40m/s)ι^+(2.20m/s)j^, what is the instantaneous power supplied by this force?
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Ответ:
Power is defined as the rate of doing work.
This is the formula:
Where P is power, W is work.
Work is defined as:
F is the force and r is the displacement.
If we assume that force is not changing (it's constant) with time we get:
Keep in mind that both force and velocity are vectors, so we have to multiply each component separately.
Finally, we get:
Ответ:
Google said proton.. But i agree that it is the atomic nucleus
Explanation: