Physics, 22.08.2019 11:00 charitysamuels
In 2009, usain bolt of jamaica set a world record of 9.58s in the 100m dash. what was his average speed?
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Physics, 22.06.2019 06:30
=force Γ distance a. work b. velocity c. pressure d. momentum
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Physics, 22.06.2019 19:30
Another word for electromagnetic energy is a. heat b. force c. matter d. radiation
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Physics, 23.06.2019 00:40
Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*
Answers: 1
In 2009, usain bolt of jamaica set a world record of 9.58s in the 100m dash. what was his average sp...
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