Two particles with masses m and 3m move towards each other with the same initial speed vi. after the elastic collision the particle m moves to 900 from the original direction. a. find the speed of the particles after the collision. b. what is the angle of the particle 3 m after the collision relative to its direction original movement?

Protons and neutrons are found within the nucleus of an atom

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the