You push a wheelbarrow a distance of 60.0 m at a constant speed for 25.0 s by exerting a 145-N force
horizontally.
a. What power do you develop?
b. If you move the wheelbarrow twice as fast, how
much power is developed?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?