Calculate the work done. a tractor pulls on a tree for 3 minutes with a force of 100 pounds. 1000 ft-lbs 3000 ft-lbs unknown zero it is: unknown

A clothes dryer uses about 30 amps of current from a 240 volt line. How much power does it use?

A force of 45 newtons is applied on an object, moving it 12 meters away in the same direction as the force. What is the magnitude of work done on the object by this force?

You are given 6 identical resistors, and allowed to combine them in any possible configuration to produce different equivalent resistances.

Is rain falling a contact or noncontact force

What is dominant, recessive, and codominant?

A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

A soccer ball is sitting in the middle of a soccer field during a game. When the referee blows his whistle, one of the players runs toward the ball and kicks it as hard as he can.

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?