Doppler Effect: As shown in the figure, a man is traveling on a bicycle along a straight road that runs parallel to and right next to some railroad tracks. While moving at 10 m/s, he hears the whistle of a train that is behind him, as shown in the figure. The frequency emitted by the train's whistle is 820 Hz, but the frequency the man hears is 774 Hz. The speed of sound is 340 m/s.(a) What frequency is heard by a stationary observer located between the train and the bicycle?(b) What is the speed of the train, and is the train traveling away from or toward the bicycle?
What will be an ideal response?
(a) 797 Hz (b) 9.8 m/s, away from the bicycle
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A) the equator B) the Tropic of Cancer (latitude 23-1/2°N) C) the Tropic of Capricorn (latitude 23-1/2°S) D) the Arctic Circle (latitude 66-1/2°N) E) the Antarctic Circle (latitude 66-1/2°S)
Just as torque is the rotational analogue of force in linear motion, rotational inertia is the rotational analogue of ________ in linear motion.
Fill in the blank(s) with the appropriate word(s).
The amount of heat that flows through a rod whose ends are held at different temperatures is proportional to the area of the rod
Indicate whether the statement is true or false
A15-? resistor is connected in parallel with a 30-? resistor. If this combination is now connected in series with an ideal 9.0-V battery and a 20-? resistor, what is the current through the 15-? resistor?
A) 0.10 A B) 0.13 A C) 0.20 A D) 0.26 A