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Physics, 23.06.2019 03:50
For most stars, what does a higher temperature tend to to with? a lower luminosity a higher luminositya red color none of the above
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Physics, 23.06.2019 06:30
Jaylen is a championship runner of the school's track team. during one of his trials, his speed was measured at 15.1 m/s. find jaylen's kinetic energy during that trial if his mass is 54.6 kg.
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Physics, 23.06.2019 07:30
By definition a socially healthy person has access to clean water in adequate living space and makes an effort to recycle
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Physics, 23.06.2019 08:00
Athin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. the rod (a) has a thermal conductivity of ka = 0.15 w/(m*k), while the tube (b) has a thermal conductivity of kb = 0.8 w/(m*k) and its outer surface is subjected to convection with a fluid of temperature t= -15°c and heat transfer coefficient 60 w/(m2 *k). the thermal contact resistance between the cylinder surfaces and the heater is negligible. (a) determine the electrical power per unit length of the cylinders (w/m) that is required to maintain the outer surface of cylinder b at 15°c. (b) what is the temperature at the center of cylinder a?
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Electrons in the 1s subshell are much closer to the nucleus in ar than in he due to the larger in a...
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