Physics, 22.08.2019 23:20 genyjoannerubiera
Ablackened, solid copper sphere of radius 4.00 cm hangs in a vacuum in an enclosure whose walls have a temperature of 20.0°c. if the sphere is initially at 0°c, find the rate at which its temperature changes, assuming that heat is transferred by radiation.
Answers: 2
Physics, 22.06.2019 09:00
Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.
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Physics, 22.06.2019 14:30
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
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Physics, 22.06.2019 16:00
What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.
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