What best describes the energy in a closed system at the beginning of a day and the energy at the end of the same day? check all that apply. some energy can disappear after it has caused motion. some energy can be changed from one form to another. some energy can be lost to the environment around the system. the total initial energy will be equal to the total final energy. the total initial energy will be greater than the total final energy. friction can cause energy to be destroyed during the day. friction can cause the amount of thermal energy to increase.

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)