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
A
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In an experiment, the experimental group is:
a. not subjected to experimental error b. not exposed to experimental treatments c. maintained under strict laboratory conditions d. treated exactly the same as the control group, except for one independent variable e. statistically the most important part of the experiment
Astronomers sometimes make use of "neutrino telescopes," which are typically located deep underground. What are neutrinos?
A) a type of light-weight subatomic particle B) a very high-energy form of light C) a very low-energy form of light D) a type of wave predicted to exist by Einstein's general theory of relativity
The equation of motion of a particle undergoing simple harmonic motion in the y direction is y = (2.0 cm) sin(0.60 s-1 t)
At time t = 0.60 s determine the particle's (a) position, (b) velocity, and (c) acceleration.
An ideal heat engine can have an efficiency of 1 if the temperature of the low temperature reservoir is
a. 0 K. b. 0°C. c. 0°F. d. 0°R. e. the same as the temperature of the heat source.