Sound waves cannot travel in

a. steel.

b. air.

c. a vacuum.

d. water. e. sound can travel in all of the above.

Select the correct answer. When a pendulum is held high and taut and then is released, the pendulum begins to swing. What's the correct order of the energy transformations in this example? (PE stands for potential energy.) A.

If all else is constant, which would cause the greatest increase in kinetic energy of a moving object? Mass and velocity are each reduced by one-half. Mass is reduced by one-half, and velocity is doubled.

What two characteristics are used to classify air masses

Why does a block of metal sink in water but the same size block of wood floats

When the frequency of a force applied to a system matches the natural?

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching