What happens to matter when we add or take away heat energy?

Give examples to show that friction is both a friend and a foe.

What is the first stage of a thunderstorm?

The total momentum of two marbles before a collision is. 06 kg·m/s. No outside forces act on the marbles. What is the total momentum of the marbles after the collision?

What is the frequency of an x - ray if the wavelength is 4.5 E - 10m?

What is held together by intermolecular forces? atoms charged particles molecules compounds

If element X has 17 protons, how many electrons does it have?

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart's velocity after a 6.0-newton westward force acts on it for 2.

A boat floats with 25% of its volume under water. a. What is the boatâs density? b. If the boat was made from 500 kg of metal, what is the volume of the boat? (Assume the air in the boat has negligible mass and density) c.

Why does each mineral have their own property, different from every other mineral?

Earth's tallest mountain ranges are found at plate boundaries