Aboy pushes on a box of mass 39 kg and it moves at an acceleration of 7.8m/s2. with what force does the boy push on the box?

How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of