Physics, 05.10.2019 17:30 victoriay3
Ascientist discovered an elementary particle paired with another particle. it has a positive charge equal to two–thirds of the charge of an electron. how should the scientist categorize the particle?
a.) boson
b.) lepton
c.) photon
d.) quark
Answers: 1
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Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?
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Smallest intensity of a stimulus that you can detect 50 percent of the time is
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What is an electric motor? explain its operation. 2-3 sentence
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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
Ascientist discovered an elementary particle paired with another particle. it has a positive charge...
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