A heat engine has an effeciency of 0.48. Initially, the engine performs net work W per cycle. Then the heat input changes and the net work increases to 3.3W per cycle. By what factor did the heat input change?
6.6
0.30
1
3.3

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Which statement best explains why the overall charge on an atom is zero?

Multiply 5.036×102m by 0.078×10−1, taking into account significant figures.