The motor of a four wheeler traveling along a muddy trail generates an average power of 7.05 104 w when moving at a constant speed of 15 m/s. when pulling a log along the trail at the same speed, the engine must generate an average power of 8.15 104 w. what is the tension in the tow rope pulling the log?

Explanation:

Power is the work to make a motion in a determine time also the al the work is the force make in a distance so:

Replacing

Knowing that the velocity is:

So:

Solve to F to determinate the tension that in this case is the force in the rope

The power is the total power so:

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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total distance/total time

(85 + 82)/(5+3)

167/8

20 just over