Which of the following is not a common property of waves?
a. wavelength
b. frequency
c. mass
d. period

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Which lists the organs in the correct order as food passes from the mouth to anus?