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Author Question: A car is approaching a radio station at a speed of 25.0 m/s. If the radio station broadcasts at a ... (Read 181 times)

cartlidgeashley

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on: Jul 29, 2018
A car is approaching a radio station at a speed of 25.0 m/s. If the radio station broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver observe?
 
  A) 98.3 Hz
  B) 6.21 Hz
  C) 726 Hz
  D) 67.0 Hz
  E) 64.5 Hz

Question 2

Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1  10-7 W/m2. Another student is 4.0 m away from the talkers. What sound intensity does the other student measure?
 
  A) 6.2  10-8 W/m2
  B) 1.5  10-7 W/m2
  C) 8.3  10-8 W/m2
  D) 7.8  10-7 W/m2
  E) 2.5  10-8 W/m2


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Amiracle

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


cartlidgeashley

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

strudel15

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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