Which of the following are detectable by the human body?

The relation between wave velocity '', frequency '', and wavelength '' is ______.

Sound waves cannot travel in 

The source of all sound waves is a 

If a large housefly 3.0 m away from you makes a noise of 40.0 dB, what is the noise level (in dB) of 1000 flies at that distance, assuming interference has a negligible effect?

Give your answer to the nearest whole number.

A sound source sends waves of 400 Hz. It produces waves of wavelength 2.5 m. The velocity of sound waves is

The amplitude of a particular wave is 1 m. The top to bottom (crest to trough) distance of the wave is 

Wave interference can occur for

The speed of any wave depends upon 

All waves have