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Author Question: Suppose you watch a leaf bobbing up and down as ripples pass it by in a pond. You notice that it ... (Read 29 times)

jilianpiloj

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on: Jul 27, 2018
Suppose you watch a leaf bobbing up and down as ripples pass it by in a pond. You notice that it does two full up and down bobs each second. Which statement is true of the ripples on the pond?
 
  A) They have a wavelength of two cycles per second.
  B) They have a frequency of 4 hertz.
  C) We can calculate the wavelength of the ripples from their frequency.
  D) They have a frequency of 2 hertz.

Question 2

Every second, the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. The remaining 4 million tons of mass is ________.
 
  A) converted to an amount of energy equal to 4 million tons times the speed of light squared
  B) reabsorbed as molecular hydrogen
  C) ejected into space in a solar wind
  D) ejected into space by solar flares


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djpooyouma

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

D

Answer to Question 2

A


jilianpiloj

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


djpooyouma

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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