Three cars crash are in a crash at an intersection. The first one has a momentum of 3.00 x 10 kg*m/s at 22.0° south of east. The second one has a momentum of 1.80 x 104 kg*m/s at 12.8" South of west. The third car has a momentum of 3.74 x 104 kg*m/s at 10.0° east of south. What was the total momentum of the cars before the crash (magnitude and direction)?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?