An 800-MW electric power plant has an efficiency of 30%. It loses its waste heat in large cooling towers. Approximately how much waste heat (in MJ) is discharged to the atmosphere per second?
a. 1 200
b. 1 900
c. 800
d. 560
e. 240
b
Physics & Space Science
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Briefly describe why the detection of neutrinos coming from the Sun supports the theory that the Sun generates energy by nuclear fusion
What will be an ideal response?
Physics & Space Science
U-235 and Pu-239 are both
A) radioactive isotopes. B) fissionable isotopes. C) heavier than lead. D) all of the above E) none of the above
Physics & Space Science
Which has more skin?
A) an elephant B) a mouse C) both the same
Physics & Space Science
If the sum of the forces exerted on a 4.5-kg tool accelerates it at 40 m/s2, what acceleration would that same sum of the forces give to an 18-kg tool?
A) 180 m/s2 B) 10 m/s2 C) 160 m/s2 D) 9.8 m/s2 E) 32 m/s2
Physics & Space Science