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Firdavs [7]
3 years ago
14

4. You exert 375 J to move a 45-kg object 5 m. How much force is required? (Points : 3)

Physics
1 answer:
Yuri [45]3 years ago
4 0
In physics, a force is said to do work<span> if, when acting, there is a displacement of the point of application in the direction of the force. It is calculated by the formula W = f x d. Therefore, we calculate the problem above as follows:

W = f x d
375 = f x 5
</span>f = 75 N <------SECOND OPTION
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If the spring constant of the bungee rope is greater than that of a rubber band, it will have more elastic potential energy. However, if the spring constant of the rubber band is greater than that of the bungee rope, the rubber band will have more elastic potential energy.

<h3>Elastic Potential energy </h3>

Elastic Potential energy is the stored in a elastic string which has been compressed or stretched.

The formula for calculating elastic potential energy is given as:

  • Elastic Potential = 1/2 Kx^2

where

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The elastic potential of an elastic material depends on the spring constant and the distance stretched or compressed.

Since the bungee rope and the rubber band are stretched the same distance, their elastic potential energy depends on their spring constant.

Therefore, if spring constant of the bungee rope is greater than that of a rubber band, it will have more elastic potential energy. However, if the spring constant of the rubber band is greater than that of the bungee rope, the rubber band will have more elastic potential energy.

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⦁ A certain resistor is required to dissipate 0.25 W, what standard rating should be used?
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g is the acc due to gravity = 9.8m/s²

R = 3.5m

Substitute into the formula and get H

3.5 = 4.8√2H/9.8

3.5/4.8 = √2H/9.8

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