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Author Question: If a wave has a wavelength of 25.4 cm and a frequency of 1.63 kHz, its speed is closest to A) ... (Read 220 times)

jCorn1234

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on: Jul 29, 2018
If a wave has a wavelength of 25.4 cm and a frequency of 1.63 kHz, its speed is closest to
 
  A) 0.414 m/s
  B) 41.4 m/s
  C) 414 m/s
  D) 41,400 m/s
  E) 15.6 m/s

Question 2

Air is flowing through a rocket nozzle. Inside the rocket the air has a density of 5.25 kg/m3 and a speed of 1.20 m/s.
 
  The interior diameter of the rocket is 15.0 cm. At the nozzle exit, the diameter is 2.50 cm and the density is 1.29 kg/m3. What is the speed of the air when it leaves the nozzle?
  A) 176 m/s B) 123 m/s C) 88.0 m/s D) 45.7 m/s E) 29.3 m/s


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diana chang

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

C

Answer to Question 2

A


jCorn1234

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Reply #2 on: Jul 29, 2018
TY


diana chang

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Reply #3 on: Jul 29, 2018
You're welcome


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