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Physics, 22.06.2019 16:20
Select the correct answer. what does the process of natural selection involve?
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Physics, 22.06.2019 23:40
What is the magnitude of the gravitational force acting on the earth due to the sun?
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Physics, 23.06.2019 05:30
Which class of lever is a baseball bat? what are the parts of a baseball bat's lever class? describe each one.enter your answer in the space provided.(this question you write your own answer.)i couldn't find the right category, so sorry if this doesn't match.
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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
Mathematics, 28.01.2020 05:31
History, 28.01.2020 05:31
Mathematics, 28.01.2020 05:31
Chemistry, 28.01.2020 05:31
Mathematics, 28.01.2020 05:31
Mathematics, 28.01.2020 05:31
Mathematics, 28.01.2020 05:31
History, 28.01.2020 05:31
Chemistry, 28.01.2020 05:31
Mathematics, 28.01.2020 05:31