The mechanical energy of an object equals its
a. chemical energy plus its nuclear energy.
b. kinetic energy plus its potential energy.
c. nuclear energy.
d. thermal energy.

Which of the following is an example of motion in two dimensions?

Ms. hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?