If you hold a ball up in the air and drop it, you change the ball's potential energy to kinetic energy: True or False

A solid disk of mass m1 = 9.5 kg and radius r = 0.19 m is rotating with a constant angular velocity of ω = 39 rad/s. a thin rectangular rod with mass m2 = 3.3 kg and length l = 2r = 0.

A space shuttle can accelerate at a rate of 2.5m/s squared. Given that, and the fact that the engines of the space shuttle can produce a force of about 1,600,000N, determine the mass (in kilograms) of the space shuttle

A garden hose with an internal diameter of 1.6 cm is connected to a (stationary) lawn sprinkler that consists merely of a container with 25 holes, each 0.30 cm in diameter. If the water in the hose has a speed of 0.

Compared to driving at 20 mph, about how much longer will it take for you to stop at 60 mph? a.) 2 to 3 times b.) 4 to 6 times c.) 8 to 10 times

Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. which cart has the greatest change in speed

What is the purpose of a valve?

A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

Where are the magnetic fields stronger near a bar magnet? A) Top B) Center C) Ends D) Bottom

You pull a simple pendulum of length 0.225m to the side through an angle of 3.50∘ and release it. Part A How much time does it take the pendulum bob to reach its highest speed? Take free fall acceleration to be 9.80 m/s^2.

What is the velocity of a wave having a frequency of 25 Hz and a wavelength of 10m