Physics, 10.03.2020 03:42 cathyfrawley
Black holes are so named because A. they emit a perfect blackbody spectrum. B. no light or any other electromagnetic radiation can escape from inside them. C. all their electromagnetic radiation is gravitationally redshifted to the infrared, which leaves no light in the optical region. D. they emit no visible light, their only spectral lines are in the radio and infrared.
Answers: 3
Physics, 21.06.2019 17:20, lamwil9432
When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.
Answers: 1
Physics, 22.06.2019 11:00, amcdonald009
Which sound characteristic is not affected by the relative motion of an object
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Physics, 22.06.2019 16:50, Jstylez1789
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Black holes are so named because A. they emit a perfect blackbody spectrum. B. no light or any other...
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