The movers apply a force of 430 N to push a piano up a 2.0 m long ramp. How much work has been done when they reach the top of the ramp?

428 Watts

ОА

B

215 Joules

At what temperature (degrees fahrenheit) is the fahrenheit scale reading equal to (a) 6 times that of the celsius and (b) 1/5 times that of the celsius?

What is the effect of putting a ferromagnetic material inside the coil of a solenoid?

A 2 kg object is given a displacement ∆~s = (5 m) ˆı + (3 m) ˆ + (-4 m) ˆk along a straight line. During the displacement, a constant force of F~ = (3 N) ˆı + (-1 N) ˆ + (7 N) ˆk acts on the object.

How can Ohm's Law relate to a house fire?

What is the volume of an aluminum cube with edges that are 10 centimeter cubes

A geologist estimates that a large boulder weighs 7840 N. What should he estimate the mass of this boulder to be? A. 650 kg B. 740 kg C. 780 kg D. 800 kg

Two objects have the same momentum. Do the velocities of these objects necessarily have (a) the same directions and (b) the same magnitudes? Give your reasoning in each case.

If you keep voltage constant and increase resistance resistance, what happens to current?

A scene in a movie has a stuntman falling through a floor onto a bed in the room below. The plan is to have the actor fall on his back, but a researcher has been hired to investigate the safety of this stunt.

During energy transformation, all energy systems: are a. 100 percent efficient b. lose energy c. gain heat energy d. create energy