If the red shift of a quasar were 3, at what wavelength would the 486.1 nm line of hydrogen appear in the quasar's spectrum?
What will be an ideal response?
1944.4 nm
Physics & Space Science
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A 120 kg scuba diver with tanks and equipment is submerged and floating underwater in seawater. The volume of the seawater displaced by the scuba diver with tanks and equipment is
A. 0.097 
B. 0.102
C. 0.117
D. 0.154
E. 0.177
Physics & Space Science
The lakes of Titan consist of liquid ________
Fill in the blank(s) with correct word
Physics & Space Science
Which type of hydrogen is referred to as "heavy hydrogen"?
a. Tritium b. Hydronium c. Protium d. Deuterium
Physics & Space Science
For the same temperature increase in a system, the change in entropy, DS, is largest in a reversible
a. constant volume process. b. constant pressure process. c. adiabatic process. d. process in which no heat is transferred. e. process in which no work is performed.
Physics & Space Science