Question

Two test pilots are in identical jets that produce a characteristic tone of 587 Hz. One jet is stationary on the airstrip and the second is approaching the airstrip at a speed of 72.6% the speed of sound. Take the speed of sound in air to be 343 m/s. The pilot of each jet listens to the sound produced by the other jet. Determine the following. (a) Which pilot hears a greater Doppler shift? the stationary pilot the moving pilot (b) the frequency heard by the pilot in the moving jet Hz (c) the frequency heard by the pilot in the stationary jet Hz

Answer #1

Female Aedes aegypti mosquitoes emit a buzz at about 4.00×102
Hz, whereas male A. aegypti mosquitoes typically emit a buzz at
about 6.00×102 Hz. As a female mosquito is approaching a stationary
male mosquito, is it possible that he mistakes the female for a
male because of the Doppler shift of the sound she emits?
How fast would the female have to be traveling relative to the
male for him to make this mistake? Assume the speed of sound in...

Two identical care moving in one direction honk each other at a
frequency 1000 Hz. speed of one car is 80 k/h which speed of the
other car is 60 km/h. Find frequencies at which the sound is heard
by the drives of the cars. Find intensity sound when the distance
between cars is 300 m. Assume that horns of both cars have power
400 W.

A. What length should an oboe have to produce a fundamental
frequency of 244 Hz on a day when the speed of sound is 343 m/s? It
is open at both ends.
B. What frequency is received by a person watching an oncoming
ambulance moving at 119 km/h and emitting a steady 706 Hz sound
from its siren? The speed of sound on this day is 333 m/s.
C. What energy in millijoules falls on a 0.808 cm diameter
eardrum...

A stone is dropped from the top of a cliff. The splash it makes
when striking the water below is heard 3.2 s later. How high is the
cliff?
2. The pressure variation is a sound wave is given by Δ P =
0.0035 sin (0.38 π x – 1350 π t) Determine a. the wavelength b. the
frequency c. the speed and d. the displacement amplitude of the
wave. Assume the density of the medium to be 2.2 x...

1. Consider a speaker at some fixed position, emitting sound
uniformly in all directions. You are standing at some distance d
from this speaker, holding a sound-intensity measuring device. You
then walk 25.0 m in a straight line towards the speaker. At this
point you observe that the intensity of the sound has doubled (from
the previous location). Determine the distance d. There are no
echoes or reflections or interference.
2. You are standing equidistant from four identical jet engines...

What tools could AA leaders have used to increase their
awareness of internal and external issues?
???ALASKA AIRLINES: NAVIGATING CHANGE
In the autumn of 2007, Alaska Airlines executives adjourned at
the end of a long and stressful day in the
midst of a multi-day strategic planning session. Most headed
outside to relax, unwind and enjoy a bonfire
on the shore of Semiahmoo Spit, outside the meeting venue in
Blaine, a seaport town in northwest
Washington state.
Meanwhile, several members of...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 5 minutes ago

asked 5 minutes ago

asked 8 minutes ago

asked 11 minutes ago

asked 14 minutes ago

asked 21 minutes ago

asked 22 minutes ago

asked 33 minutes ago

asked 38 minutes ago

asked 42 minutes ago

asked 46 minutes ago