Reference no: EM132438807

Problem: A bat uses ultrasound to find its way among trees. If this bat can detect echoes 1.00 ms apart, what minimum distance between objects can it detect? (b) Could this distance explain the difficulty that bats have finding an open door when they accidently get into a house?

Dolphins make sounds in air and water. What is the ratio of the wavelength of a sound in air to its wavelength in seawater? Assume air temperature is 20.0⁰ C.

A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound and finds it to be 0.400 s.

(a) How far away is the explosion if air temperature is 24.0⁰ C and if you neglect the time taken for light to reach the physicist?

(b) Calculate the distance to the explosion taking the speed of light into account. Not that this distance is negligibly greater.

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

What length should an oboe have to produce a fundamental frequency of 110Hz on a day when the speed of sound is 343 m/s? It is open at both ends.