How much heat is needed to raise the temperature of 100.0 g of water by 50.0°C? (Water's specific heat is 4.18 J/g•°C)

A stone fell from the top of a cliff into the ocean. In the air, it had an average speed of 161616 / text{m/s}m/sstart text, m, slash, s, end text.

The three classes of rocks are sedimentary, metamorphic, and igneous. How are rocks classified into one of these three groups?

The position of a particle as it moves along the x axis is given by x = 15e-2t m, where t is in s. what is the acceleration of the particle at t = 1.0 s?

Stellar distances are usually expressed in what units called?

If there are 4.448 newtons in a pound, what is the weight of the toy-filled truck in newtons?

Why can radio telescopes be used 24 hours a day?

How do you find mass, volume and density? Any formulas?

Explain the difference between texture and composition.

Marie and Calvin dissolved 10 grams of KNO3 in 100 grams of water at 25oC. Next they added 5 grams more.

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. It strikes a red glider that has mass 0.600 kg and that is initially at rest.