A speeder is pulling directly away and increasing his distance from a police car that is moving at 22 m/s with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 7.04×109. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 300 Hz less than the emitted frequency. Calculate the speeder's speed with respect to the ground.

Using the doppler effect, the formula for the doppler shift is: Substitute the known values and…

Answered: A speeder is pulling directly away and…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 18P

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A speeder is pulling directly away and increasing his distance from a police car that is moving at 22 m/s with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 7.04×10⁹. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 300 Hz less than the emitted frequency. Calculate the speeder's speed with respect to the ground.

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