A 2000 kg car is parked at the top of a 30 m high hill. what is its potential energy

You did 150 joules of work lifting a 120-newton backpack. a. How high did you lift the backpack? b. How much did the backpack weigh in pounds?

Why might a permanent magnet become unmagnetized if it is dropped?

An extended period of well-below-average temperatures is known as a A. drought. B. ice age. C. cold wave. D. draft.

A wave that moves its medium parallel to its direction of travel is a

6 A single sheet of aluminium foil is folded twice to produce a stack of four sheets. The total thickness of the stack of sheets is measured to be (0.80 ± 0.02) mm. This measurement is made using a digital caliper with a zero error of (-0.20 ± 0.

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp

Sodium, atomic number 11, forms an ionic bond with an atom of an unknown element. What is one possible choice for the ther element in the compound?

A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must it now head so that its resultant displacement will be 125 km directly east of Guam?