18. A red car and a blue car can move along the same straight one-laneroad. Both cars can move only at one speed when they move (e.g., 60 mph).The driver of the red car sounds his horn. In which one of the followingsituations does the driver of the blue car hear the highest horn frequency?(a) Both cars are moving at the same speed, and they are moving apart.(b) Both cars are moving in the same direction at the same speed. (c) Bothcars are moving at the same speed, and they are moving toward each other.(d) The red car is moving toward the blue car, which is stationary. (e) Theblue car is moving toward the red car, which is stationary.

Doppler effect is the change in frequency of wave with respect to an observer who is moving relative…

Answered: 18. A red car and a blue car can move…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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This is possibly a different atmosphere from ours. In any case, the speed of sound is computer-generated, and is 454 m/s this time. Light travels for us instantaneously. You see a lightning flash, and 7.6 seconds later, you hear the thunderbolt. How far away was the lightning (in meters)?
Problem 9: A runner is at the starting line and hears the starting gun. He starts running from rest with a constant acceleration a; = 0.51 m/s. He crosses the finish line V V, at d = 100 m and then begins slowing down. It takes him a time interval t. to cross the V = 0 finish line. It takes him a time interval t = 6.5 s to return to rest after crossing the finish line. Use the given coordinate system where x is positive to the right. Refer to the figure. t= 0 t=t =t, Part (a) Enter an sion for the time, t, it takes for the runner to cross the finish line, in terms of d and a;. Expression : tr = Select from the variables below to write your expression. Note that all variables may not be required. a, B, A, Q, 0, a¡, d, g, h, i, j, k, 1, m, P Part (b) Enter an expression for the runner's speed, v,, when he crosses the finish line, in terms of a; and t, only. Expression : r = Select from the variables below to write your expression. Note that all variables may not be required. B, T, Q, 0,…
A particular sound wave has a frequency of 1460 Hz. How much time passes while one wave is made? O 6.8 x 104 s O 0.23 s 1460 s O4.3 s 16 17 18 19 20 21 22 23
4. An observer is standing on the platform of a railway station. A train goes through the station without stopping. If the frequency of the train whistle decreases by a factor of 1/4 as it approaches and then passes him, calculate the speed of the train (assume the speed of sound in air = 343 m/s).
A green car and a yellow car can move along the same straight one-lane road. Both cars can move only at one speed when they move (e.g., 35 mph). The driver of the yellow car sounds his horn. In which one of the following situations does the driver of the green car hear the lowest horn frequency? Group of answer choices a)The green car is moving toward the yellow car, which is stationary. b)The yellow car is moving toward the green car, which is stationary. c)Both cars are moving at the same speed, and they are moving toward each other. d)Both cars are moving in the same direction at the same speed. e)Both cars are moving at the same speed, and they are moving apart.
An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads to the center of the storm to take some readings while you stay dry at home. While Clark is at the center of the storm, he sees and hears lightning strike a tree that is 185 m from where he is standing. You are 134 km from the tree. How long does it take for the sound to reach Clark? Assume the speed of sound is 343 m/s. How long does it take for the light to reach you?
Ocean waves with a wavelength of 40.0 m travel at 5.00 m/s towards a boat at sea. Determine the number of times the boat bobs up and down per minute as a result of encountering the waves.
An F1 racecar is speeding around the track at 233 mph when it passes by a seated spectator. The racecar gives off a 10 kHz pitch. If the speed of sound is 344 m/s, what is the frequency of the pitch the spectator hears as the racecar approaches? 1 mi = 1.6 km
9. A jet flies toward higher altitude at a constant speed of 1 963 m/s in a direction that makes an angle 0 with the horizontal (Fig.). An observer on the ground hears the jet for the first time when it is directly overhead. Determine the value of 0 if the speed of sound in air is 340 m/s.
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