When you hold a piece of chocolate in ypur hand, why does the chocolate melt?

Most substances dissolve A. at a constant rate regardless of heat transfer. B. more quickly as heat is removed from them. C. at the same rate as all other substances. D. more quickly when heat is added to them.

What is nuclear fission? why is this process important to stars?

A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 810-kg helicopter rises from rest to a speed of 7.0 m/s in a time of 3.5 s.

According to the work-energy theorem, the amount of work done can be determined using which formula?

What is found in the large quantities on earths crust

What is the speed of a 0.145kg baseball if its kinetic energy is 109J?

A student travels from st. louis to indianapolis, a distance of 210 mi, in 7.0 h. the return trip over the same route takes 6.0 h. what is the average speed for

If the velocity of a moving object doubles, then what else doubles?

Which of the following dose not represent an adaptation that would lead an organism to be successful

Which set of conditions would produce the least favorable soil for growing crops?