A pebble is dropped from a cliff. Neglecting air resistance, if the rock falls for 4 seconds. How fast is it moving?

Which object has the least momentum? object a: m = 1 kg, v = 100 m/s object b: m = 10 kg, v = 12 m/s object c: m = 0.5 kg, v = 1000 m/s object d: m = 100 kg, v = 2 m/s?

Why is temperature constant during a phase change?

An engineer weighs a sample of mercury (ρ = 13.6 * 103 kg/m3) and finds that the weight of the sample is 6.0 n. what is the sample's volume? the acceleration of gravity is 9.81 m/s 2. answer in units of m3.

A quantum system has three energy levels, so three wavelengths appear in its emission spectrum. The shortest observed wavelength is 218 nm; light with a 454 nm wavelength is also observed. What is the third wavelength?

Why is salami better than boloni

If your at the mall with your friends and they shoplift what would you do

Fluid is leaking from an axle seal. Technician A says to remove the wheel and check for incorrectly installed brake components. Technician B says to check for obstructions at the differential breather.

All matter we encounter in everyday life exists in one of three physical formss True or False.

15 grams of liquid plastic are frozen in a physical change that increases the volume. What can be known about the plastic after the change?

A Car is lifted a certain distance in a service station and therefore has potential energy relative to the floor. if it was lifted twice as high, how much potential energy would it have?