The peak of the radiation curve of a blackbody moves toward larger wavelength as its temperature increases
a. True
b. False
Indicate whether the statement is true or false
False
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Superconductors have a primary advantage in that they will _______
a. reduce heating losses in transmission lines b. provide large magnetic fields for levitation c. be able to conduct more current d. allow electric motors to run almost forever
What, approximately, are the dimensions of the smallest object on Earth that the astronauts can resolve by eye at 200 km height from the space shuttle? Assume ? = 500 nm light and a pupil diameter D = 0.50 cm. Assume eye fluid has an average n = 1.33
a. 150 m b. 100 m c. 250 m d. 25 m e. 18 m
If life exits on Mars today, it is most likely to be found
A) beneath the surface B) on the surface C) floating in the atmosphere D) buried in the polar ice caps
Compared to the speed a satellite loses when traveling from nearest to farthest points from Earth, the speed gained when returning from farthest to nearest is
A) less. B) the same. C) more.