Doppler Effect: A whistle produces sound of frequency of 1.00 kHz. If a listener moves with a speed of 30 m/s away from the whistle, what frequency does this person hear if the sound speed is 340 m/s?
A. 912 Hz
B. 919 Hz
C. 1000 Hz
D. 1090 Hz
Answer: A
You might also like to view...
A viscoelastic model of a solid with a series spring and dashpot is a _________solid.
Fill in the blank(s) with the appropriate word(s).
What is a blackbody?
a. a perfect emitter and a perfect absorber of light b. a perfectly opaque object c. a dense object having a temperature above absolute zero d. All of the other choices are correct.
Your friend says that the heavyweight champion of the world cannot exert a force of 50 N on an isolated piece of tissue paper with his best punch. You
A) agree that it can't be done. B) have reservations about this assertion. C) disagree, for a good punch easily delivers this much force.
Earth's magnetic field
A) prevents charged particles in the solar wind from reaching the surface. B) is a remnant of the solar nebula's magnetic field. C) is weakening the Van Allen radiation belts. D) is the force behind plate tectonics. E) lines intersect the atmosphere at the equator.