What is the weight of a rock that has a mass of 7kg?

If the speed of a ball increased from 1m/s to 4m/s, by how much would kinetic energy increase

True or False? Gases such as water vapor condense when they are * heated*.

How did the Spanish civil war led to ww2

How much energy in calories does it take to melt 10 grams of ice?

A stretched spring has an elastic potential energy of 35 J when it is stretched 0.54 m. What is the spring constant of the spring? Round your answer to two significant figures.

The path of a beam of light from the sun to your eye when you are wearing sunglasses

The element that is most abundant in earth is

What is true about coal as an energy source

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.