A rock with mass of 5.0 kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill? w = 490 j 4900 j 245 j impossible to tell because velocity not given

What is the charge of a lambda particle in elementary charges?

A person on a merry-go-round is constantly changing direction. True or false

The truck's motor is creating 500 N of thrust, but air resistance is placing 500 N in the opposite direction

What is the mass of an object that weighs 686N on Earth?

What is the emf produced in a 1.5 meter wire moving at a speed of 6.2 meters/second perpendicular to a magnetic field of strength 3.96 * 10-3 newtons/amp·meter?

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.

Give an example of each simple machine