(quick mechanic uses a mechanical lift to raise a car. the car weighs 10,200 n. the work required to do this was 22,440 j.
what is the distance over which the force was applied?
a. 4.64 j
b. 2.04 j
c. 2.2 m
d. 2.16 10^-4 m

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?