Heat causes water molecules to expand

If you were able to measure the motion of all particles of a sample and you used this data to find the average you would actually be measuring what

A sprinter who is running a 200-m race travels the second 100 m in much less time than the first 100m because

One car drives north at 60 mph. Another car leaces 30 minutes later and drives south at 50 mph. How long will it take for the two cars to be 360 miles apart?

Potassium chlorate decomposes to produce 20 g of solid potassium chloride. Oxygen gas is also produced. Which best describes the mass of oxygen? A. It is more than the mass of potassium chloride. B. It is less than the mass of potassium chlorate. C.

How long would it take to drive to alpha centauri (4.4 light-years away) ?

What percent of my Iodine-131 sample will be left after 7 half-lives?

A 58.0 kg snow skier is on the top of 351 m high hill. After she has gone down a vertical distance of 142 m, what is her mechanical energy? Explain your answer (CER) !

A sphere has a mass of 2.10kg and travels along a horizontal plane at the velocity of 12.2m/s. Find the energy

What is the force required to accelerate a baseball with a mass of 0.145 kilograms and an acceleration of 35.00 meters/second squared?

A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?