What happens to the temperature of a substance during a phase change?
a. the temperature increases.
b. the temperature decreases.
c. the temperature remains constant.
d. the temperature fluctuates randomly.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

The mini-refrigerator fire was most likely caused by what type of wiring?

Which governments provide garbage collection services to homes and businesses