Physics, 22.08.2019 21:30 janiyagoldsmith
You are pushing a shopping cart. if you take items out of your cart but push at the same distance how does your work change? your work will?
a. increase because you have less to push
b. decrease because you have less to push
c. not change because distance does not change
d. can't be determined from the information given
Answers: 2
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How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c
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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
You are pushing a shopping cart. if you take items out of your cart but push at the same distance ho...
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