Friction changes energy of motion into heat. what are examples of this type of energy transfer?

You drop a 6.0x10^-2 kg ball from height of 1.0m above hard flat surface. Ball strikes surface and energy decreases by 0.14J, then bounces upward. How much kinetic energy does the ball have just after it bounces off the flat surface?

How do we determine the amount of dark matter in elliptical galaxies?

Which of the following are examples of radiation? (Choose all that apply)

Which item is an example of a primary source? A. An academic paper analyzing John F. Kennedy's presidency B. A transcript of a presidential speech C. A textbook about American foreign policy D.

Cart A, with a mass of 0.4 kg, travels on a horizontal air track at 6 m/s and hits cart B, which has a mass of 0.8 kg and is initially at rest.

The relationship between frequency and wavelength is a (n) relationship

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.

15 J of work were expended moving an 18 kg block. At what velocity did the block move? Provide step by step walkthrough

Define element and list two examples.

5 Sam is standing in an empty auditorium. He yells and hears his voice echo. What is happening to the sound to cause this echo?