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Home Q & A Board Science-Related Homework Help Physics Astronomy
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caroline12345 caroline12345
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6 years ago
The hydrogen Balmer line H has a wavelength of 434.0 nm in the laboratory. It is observed in a quasar at 651.0 nm. In terms of the speed of light, what is the recessional velocity of this quasar?
 
  a. 217.0
  b. 2
  c. 1.5
  d. 0.67
  e. 0.5

Question 2

Venus is very hot because its atmosphere is rich in carbon dioxide.
 
  Indicate whether the statement is true or false

Question 3

The hydrogen Balmer line H has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a redshift or blue shift ?
 
  a. 0; no change
  b. 2430.5; redshift
  c. 486.1; blue shift
  d. 1944.4; blueshift
  e. 1944.4; redshift

Question 4

Flow channels on Venus suggest it was once rich in water.
 
  Indicate whether the statement is true or false
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AzhanAzhan
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6 years ago
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caroline12345 Author
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#2
6 years ago
Thank you

Can you answer the others that I've posted too? Face with Cold Sweat
wrote...
#3
6 years ago
I'll take a quick look at them
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