A 12 kg ball moving at 20 m/s strikes another ball at rest. After a completely inelastic collision, the balls move at 10 m/s. What was the mass of the second ball?

Ultrasound consists of sound at frequencies most people can hear?

Which sentence states Newton's third law?

When removing the objects from the oven, you accidentally touch each one with your hand. Rank these objects on the basis of how hot they feel. Rank from largest to smallest. To rank items as equivalent, overlap them.

Where do buoyant forces act on?

Modern physics theories indicate that: A) All particles exhibit wave behavior. B) Only moving particles exhibit wave behavior. C) Only charged particles exhibit wave behavior. D) Only uncharged Particles exhibit wave behavior.

A small rock remains at rest in outer space while an astronaut pushes horizontally on it with a force of 20 N. Which of the following must be true? A. There is another horizontal force acting on the rock. B.

If an igneous rock has very large crystals of minerals that you can see when looking at it, which type of igneous rock is it

You have a 60-foot roll of fencing and a large field. You want to make two paddocks by continuing the fencing down the middle of a rectangular enclosure. What are the dimensions of the largest such enclosure you can make?

Crystallization is a separation technique used to produce rock candy from a sugar solution. true or false

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2