When heating a substance a phase change will start to occur when kinetic energy of the particles is attractive forces bewtween the particles low enough to overcome great enough to combine great enough to overcome low enough to combine equal to

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

How do you tell if someone actually cares about you? and just say they do?

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and