Physics, 28.07.2019 07:00 ayoismeisalex
The greater the force that produces a wave, the the amplitude of the wave and the the energy carried by the wave.
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Physics, 23.06.2019 07:00
Which best offense of relationship between speed and velocity speed is velocity what displacement velocity and speed with displacement spee is based on a specific direction velocity isis based on displacement
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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?
Answers: 2
Physics, 23.06.2019 11:30
He acceleration due to gravity on the surface of mars is about one third the acceleration due to gravity on earth’s surface. the weight of a space probe on the surface of mars is about
Answers: 1
The greater the force that produces a wave, the the amplitude of the wave and the the energy carri...
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