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sergij07 [2.7K]
3 years ago
5

How much work is done to lift a 3N box to a shelf 2m above the ground

Physics
1 answer:
Kaylis [27]3 years ago
6 0
When the box IS on the shelf 2m above the ground,
its potential energy is

(weight) x (height) = (3 N) x (2 m)  =  6 joules .

THAT's the work you have to do, to lift the box up to there. 
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Ghella [55]

Answer:

Acceleration is percieved, not constant velocity.

Explanation:

You are most aware when the vehicle is accelerating. At constant velocity you would not be aware of the motion. Only if the system is accelerated the dynamics must be solved considering a pseudo-force (of inertial origin) acting.

It's because of this that:

(A) False. The acceleration can be detected from the inside of a closed car.

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(C) False. Constant velocity cannot be felt in a closed car.

(D) False. Again, you can't feel constant speed.

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2 years ago
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sergejj [24]

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Explanation:

Given

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T'=\sqrt{2}T

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7 0
2 years ago
What is the velocity of a wave that has a wavelength of 20 meters and frequency of 0.5<br> Hz?
k0ka [10]

Answer:

v = 10 m/s

Explanation:

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v = 10 m/s

3 0
2 years ago
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DiKsa [7]
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3 0
3 years ago
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erastovalidia [21]

Answer:

l=3.5 x 10^-10m

Explanation:

just toook the test got it right good luck!

3 0
2 years ago
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