A Doppler radar sends a pulse at 6.00x109 Hz. It reflects off clouds
moving away at 8.52 m/s. What is the
change in frequency in the echo?

Work = force × a. work b. energy c. distance d. momentum

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.