How is power calculated?

multiply force and displacement

divide force by displacement

multiply work and time

divide work by time

By any method you choose, determine your average speed of walking

Estimate the number of atoms in 1 cm^3 of a solid

Is water wet my friends have been arguing about this for about 3 months now but now it is time to hear other people MY opinion, it is not wet the substance itself makes things wet.

An engineer discovered that a TV set was receiving too much voltage to work properly. Which of the following circuit parts should the engineer add to make the TV set work properly? A. Switch B. Insulator C. Resistor D. Conductor

Find the resultant in the x-direction, Rx and y-direction, Ry for F1 = 2.5n in the positive x-direction f2 = 1n in the negative x-direction f3 = 2n in the positive y-direction F4=3n in the negative y-direction

When a gas in a container is squeezed to half its volume, its density?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?