A bat flying toward a wall emits a 49000-Hz sonar pulse. The pulse is reflected back from the wall and the bat hears the reflected pulse at a frequency of (49000 + 430) Hz. Take the speed of sound to be 343 m/s. Find the speed of the bat, in meters per second.

A bicydist is traveling at t m/s towards a car at rest. if the dniver blows her horn at a frequency. of l627 Hz, what frequency in Hz does the bicyclist hear? Speed of Sound is 343 m/S

a noise level meter reads the sound level in a room to be 85 dB. What is the intensity of sound in W/m^2?

Problem 9:  One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 34 m/s has a siren which produces a frequency of fs = 438 Hz.Randomized Variables vS = 34 m/sf = 438 Hz       Part (a) What frequency (in Hertz) does the driver of the truck hear?Numeric   : A numeric value is expected and not an expression.fd = __________________________________________Part (b) What frequency (in Hertz) does an observer hear when the truck is moving away?Numeric   : A numeric value is expected and not an expression.fo = __________________________________________   Problem 10:  A student knows that an ambulance siren has a frequency of fs = 395 Hz. He measures, when the ambulance is approaching him, the frequency fo = 416 Hz. Assume the speed of sound is 343 m/s in this problem.       Part (a) Input an expression for the ambulance's speed, vs, in terms of the frequencies and the speed of sound v.Expression   :vs =…