A 0.5 kg bullet is moving at 6000 m/s and it hits a tree. It travels into the tree a distance of 4 M. what is the strength of the force(work) that stopped the bullet.

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

Which branches of natural science include the study of an organism that lived 10 million years ago

Current from a charged capacitor lights a bulb. as time goes on the brightness of the