A police car is moving at 39.6 m/s to catch up with a speeder directly ahead. The speed limit is 29.1 m/s. A police car radar “clocks” the speed of the other car by emitting microwaves with frequency 6.10 × 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1400 s−1. If the speeder is going faster than the police car, how fast would it have to go so that the reflected microwaves produce the same number of beats per second?
A police car is moving at 39.6 m/s to catch up with a speeder directly ahead. The speed limit is 29.1 m/s. A police car radar “clocks” the speed of the other car by emitting microwaves with frequency 6.10 × 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1400 s−1. If the speeder is going faster than the police car, how fast would it have to go so that the reflected microwaves produce the same number of beats per second?
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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A police car is moving at 39.6 m/s to catch up with a speeder directly ahead. The speed limit is 29.1 m/s. A police car radar “clocks” the speed of the other car by emitting microwaves with frequency 6.10 × 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1400 s−1. If the speeder is going faster than the police car, how fast would it have to go so that the reflected microwaves produce the same number of beats per second?
____m/s
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