What is one benefit of a switch in a circuit?

What is the full definition of specific heat?

Why is a train more difficult to stop than a rolling ball, even if they are traveling at the same speed?

How does the number of valence electrons affect the reactivity?

Two of Dalton's theories were disproven: 1. All atoms of a given element are the same. 2. Atoms can't be divided into smaller pieces. Q: Who disproved theory 1? A:? Q: Who disproved theory 2? A: J. J. Thompson?

What is the magnitude of the net force acting on a 2.0 x10^3 kilogram car?

What is the weight of atmosphere on Earth?

The noble gases are the least what of any elements on the periodic table

Why is friction between moving parts of machines undesirable?

What holds down earths atmosphere in its place?

A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.