Which device directly converts chemical energy
into electrical energy?
(1) solar-powered calculator
(2) wood-burning stove
(3) battery-powered flashlight
(4) wind-powered sailboat

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).