Andrea and the other members of the tennis team are practicing hitting tennis balls. If two people hit identical balls at the same time, which ball has the most kinetic energy?

Which object has a constant speed? a racecar starting a race a car traveling the speed limit a bicycle coming to a stop a ball falling off a table

How long did the astronauts stay on the moon?

As a blacksmith heats a piece of iron, the iron glows red, then yellow, then white. The iron provides a demonstration of which phenomenon? A. Emission spectra B. Quantum mechanics C. Photoelectric effect D. Blackbody radiation

A boy pushes forward a cart of gravesites with a total mass of 40.0 kg. What is the acceleration of the cart if the net force on the cart is 60.0 N?

What causes the Coriolis effect?

How do air quality scientists ensure the air is cleaned? What steps do they take?

Is a mirrors surface opaque or transparent or translucent?

Sound waves can combine to become bigger or smaller true or false

Archimedes supposedly was asked to determine whether a crown made for the king consisted of pure gold (density of gold is 19.3 * 103 kg/m3). According to legend, he solved this problem by weighing the crown first in air and then in water.

What are at least three types of energy involving a microwave