A girl pushes her little brother on his sled with a force of 300 N for 750 m. a. How much work is this? b. How much energy is used? c. How much power does she use if it takes her 25s? d. How much power does she use if she runs and complete the 750m in 10s?

In physics the desire of an object to keep doing what it is doing is termed?

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

When using the scientist method, which step comes last?