Which is heavier-warm air or cold air?

A compressed spring has elastic potential energy

A stone is thrown vertically upward with a speed of 12m/s from the edge of a cliff 70 m high (a) How much later it reaches the bottom of the cliff? (b) What is its speed just before hitting? And (c) what total distance did it travel? (Ans: 5.

How do the properties of water allow this organism to crawl on water?

If June and Dylan do the same amount of work but June does it in 2.5 hours and Dylan in 3.2 hours who is more powerful?

Explain the conditions in which a person can or can't hear a echo

If you were to drop a clay ball and a rubber ball of the same mass from the same height, which would have a greater change of momentum after they hit the ground?

Which is a possible measurement of the momentum of a moving object? 11 kg∙m2/s2 2.8 kg∙m/s 16 kg∙m/s, due west 9.3 m/s2, due north

Let's say you had a pulley system with a mechanical advantage of 3. If you want to lift a boulder 10 meters off the ground, how far would you have to pull the rope?

For glass fragments to be individualized, what must be true? A. They must fit together B. They must have the same density C. They must look the same D. They must be the same color

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.