You use a pulley system to lift a fallen tree. You apply a force of 50 N and the pulley pulls on the tree with a force of 1300 N what is the mechanical advantage of the pulley?

If you are driving 120 km/h along a straight road and you look to the side for 2.0 s, how far do you travel during this inattentive period?

What is the main cause of global convection currents

Plates are puzzle-piece like sections of the lithosphere that move over the asthenosphere, carrying pieces of continental and oceanic crust. Which statement about the plates can geologists assume is true?

Two boys wearing roller skates are standing on a smooth surface with the palms of their hands touching and their arms bent, as shown above.

if the sprinter travels at a constant velocity of 12 m/s for the last 64 m, how long will it take to reach the finish line?

The heat energy released or absorbed by a chemical reaction is generally determined by the difference between the energy that

A woman with a mass of * kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.550 rev/s about an axis through its center. the disk has a mass of * kg and a radius of * m.

12. Too much socializing in the workplace can

What magnetic field strength is needed in each magnet to steer protons around the ring with a speed of 4.5 * 107 m/s? Assume that the field is uniform inside the magnet, zero outside.

The parts of a longitudinal wave that are closet together?