In general, as the energy of a sound wave increases, A. the sound gets softer and then louder. B. the sound gets louder. C. the sound always remains the same. D. the sound gets softer.

A Ping-Pong ball has a diameter of 1.99 cm and average density of 0.121 g/cm3. What force would be required to hold it completely submerged under water? The acceleration of gravity is 9.8 m/s 2. Answer in units of N.

If the velocity of a pitched ball has a magnitude of 41.0 m/s and the batted ball's velocity is 50.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A 3.5 kg gold bar at 94°C is dropped into 0.20 kg of water at 22°C What is the final temperature? Assume the specific heat of gold is 129 J/kg C Answer in units of °C

Which of the following types of light can humans see with their eyes? o Microwaves o Radio Waves o Gamma rays o Humans cannot see any of the above with their eyes.

Geologists have evidence that the continents were once a single giant landmass that land mass eventually split apart and the individual continents move to their current positions what role might this movement of continents have played in evolution?

The kinetic energy of an object depends on both the objects mass and velocity. a. True b. False

How does a walkie-talkie work and why do people still use them?

A 125-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?

What is the acceleration of a 10kg pushed by a 5n force