Answer:
Negative work done of 30729.6 Joules
Explanation:
Since work done is dot product of force and displacement. so,
W= F.d
W= F d cosΘ
where Θ is the angle between force and displacement. Since resistive force and displacement makes an angle of 180 (as one is pointed east and other west). So,
W = (7.92)(1940)(cos (180)) (distance should be in meter)
W = 15364.8(-1)
W = -15364.8 (for going east)
Total work done will be twice of that as the resistive force and distance are same for the way back.
W = -15364.8 + (-15364.8)
W = -30729.6 Joules
<h2>I'm pretty sure it's</h2><h2>"<u>a motorcycle moving down the road.</u>"</h2><h3></h3><h3>The truck isn't moving so the truck cannot have momentum.</h3><h3>Momentum is basically "mass in motion."</h3><h3></h3><h3><em>Please let me know if I am wrong.</em></h3>
Subatomic particles
Explanation:
Grand unification theory or GUT is a model that tries to describe the universe.
Answer:
So, instead of fossil fuels, the magnetic field thats creatd by electrified coils in the guideway walls, and on the track combine to propel the train. Just think of it as playing with magnets. The opposite attract while if you put norh to north or south to south, they will push away from each ther. This is just the basic principle of electromagnetic propulsion
Explanation:
A. Density only depends on the substance. It doesn't matter whether you have a little chip of it or a supertanker full of it ... the density doesn't change.
