Define "impulse" in your own words.

What did the results of photoelectric-effect experiments establish? A) Electrons are emitted as soon as low-intensity, high-frequency light hits a metal surface. B) Electrons are never emitted if low-intensity light waves strike a metal surface.

What happens when the temperature of a substance decreases significantly?

True or False? a globular cluster is a group of older stars that are clustered together.

What did Galileo invent from the lenses of his spectacles

What is the freakig answer

Why is a coin able to float on top of water in a glass

Here we will look at a more complex problem for which we will use all three of our primary constant acceleration equations. a motorcyclist heading east through a small iowa town accelerates after he passes a signpost at x=0 marking the city limits.

Drag each tile to the correct box. Arrange the objects in order from least to greatest potential energy. Assume that gravity is constant. (Use PE = m * g * h.) 1.) a 15-kilogram stone found at a height of 3 meters 2.

On a cold winters da, y, If you left a drink setting outside, it could freeze. Explain why in a complete sentence Hint-Consider th kinetic theory of heat that explains that temperature is directly related to kinetic energy of atoms.

perature is 0◦F. How much taller is the building when the temperature is 107◦F? The linear expansion coefficient of steel is 1.1 * 10-5 (◦C) - 1.