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A space probe enters the thin atmosphere of a planet where the speed of sound is only about 40 m/s.Part A What is the probe's Mach number if its initial speed is 15,000 km/h? Express your answer using two significant figures. VO AEQ ? M = Submit Request Answer Part B What is the angle of the shock wave relative to the direction of motion? Express your answer to two significant figures and include the appropriate units. HA O ? 8 = Value UnitsPart A Workers around jet aircraft typically wear protective devices over their ears. Assume that the sound level of a jet airplane engine, at a distance of 29 m, is 130 dB, and that the average human ear has an effective radius of 2.0 cm . What would be the power intercepted by an unprotected ear at a distance of 29 m from a jet airplane engine? Express your answer to two significant figures and include the appropriate units. ? P = Value UnitsPart A A particular whistle produces sound by setting up the fundamental standing wave in an air column 7.30 cm long. The tube is closed at one end. The whistle blower is riding in a car moving away from you at 27.0 m/s . What frequency do you hear? HA ? = Value UnitsPart A Room acoustics for stereo listening can be compromised by the presence of standing waves, which can cause acoustic "dead spots" at the locations of the pressure nodes. Consider a living room 5.5 m long, 4.1 m wide, and 3.5 m high. Calculate the fundamental frequencies for the standing waves in this room. Express your answers using two significant figures. Enter your answers numerically separated by commas. AEd ? flength, fwidth, fheight = Hz