Physics, 01.10.2019 21:00 leannehounschell
When the plutonium bomb was tested in new mexico in 1945, approximately 1 gram of matter was converted into energy. suppose another bomb is tested, and 5.9 grams of matter are converted into energy. how many joules of energy are released by the explosion? answer must be in j
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Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude
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Area around a charged object where the objects can exert a force on another charged objects is an electric
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Auniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm. what is its kinetic energy?
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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
When the plutonium bomb was tested in new mexico in 1945, approximately 1 gram of matter was convert...
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