In the equation e = mc2, what does c represent?

You turn on the faucet for your garden hose and let go immediately the end search flying around and spraying water everywhere which of newtons laws of motion does this motion represent

What's heavier a pound of feathers or a pound of stones?

The two particles are both moving to the right. Particle 1 catches up with particle 2 and collides with it. The particles stick together and continue on with velocity vf. Which of these statements is true? a. vf = v2 b. vf is less than v2. c.

Now assume that the pitcher in Part D throws a 0.145-kg baseball parallel to the ground with a speed of 32 m/s in the + x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line.

Which of the following is not a requirement of a practical fuel? A. It must be made up of elements that combine easily with oxygen. B. It must be in the solid state to be used. C. It must contain a large amount of stored energy. D.

A rock is thrown downward into a well that is 7.92 m deep. Part A If the splash is heard 1.17 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.

Which drum would make a sound that fades away faster - one that makes a loud sound or one that makes a more mellow sound Why?

Which of the following is NOT a way to increase the solubility of a solid in water? A. crushing the solid B. shaking the mixture of solid and water C. raising the temperature of the water D. letting the mixture stand still a long time

Which of the following is true about cells? A. Cells have specialized components that perform different, specific functions. B. A cell's components are all identical and perform the same function. C.

How much heat is contained in 100 kg of water at 60.0 °C?