Q. A car battery stores about 3.00 MJ of energy. If all this energy were used to create a uniform electric field of 27.0 kV/m, what volume would it occupy?
Q. A projectile of mass 40kg that is fired from a gun has an initial velocity of 140 m/s at an angle of 38° above the horizontal. When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been released from rest. How far from the gun does the other fragment land?