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Author Question: A diver can change her rate of rotation in the air by tucking her head in and bending her knees. ... (Read 55 times)

Capo

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  • Posts: 545
on: Jul 27, 2018
A diver can change her rate of rotation in the air by tucking her head in and bending her knees. Let's assume that when she is stretched out straight she is rotating at 1 revolution per second.
 
  Now she goes into the tuck and bend, effectively shortening the length of her body by half. What will her rate of rotation be now?

Question 2

The wavelength of a certain portion of microwaves is 40 mm. What is its frequency?
 
  A) 40 GHz
  B) 4.0 GHz
  C) 0.75 GHz
  D) 75 GHz
  E) 7.5 GHz


marict

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Reply #1 on: Jul 27, 2018
Answer to Question 1

4 Hz

Answer to Question 2

E


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