A factory whistle blows at a frequency of 1216 HZ. What pitch will the passengers of a car moving at 8 m/s away from the whistle hear if the speed of sound is 343 m/s.
1315 Hz
1324 Hz
1188 Hz
1117 Hz

The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

What is a subatomic particle with a negative charge and very little mass?