Athermometer is placed in water in order to measure the water’s temperature. what would cause the liquid in the thermometer to rise?
a. the molecules in the water move closer together. b. the molecules in the thermometer’s liquid spread apart. c.the kinetic energy of the water molecules decreases. d. the kinetic energy of the thermometer’s liquid molecules decreases.

Explain why electric current cannot exist if a current doesn't have a voltage source.

What is the equation for electrical work?

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?