Physics, 11.12.2019 06:31 jenescobedo
Cold water (cp = 4.18 kj/kg⋅°c) leading to a shower enters a well-insulated, thin-walled, double-pipe, counterflow heat exchanger at 10°c at a rate of 0.95 kg/s and is heated to 70°c by hot water (cp = 4.19 kj/kg⋅°c) that enters at 85°c at a rate of 1.6 kg/s. determine (a) the rate of heat transfer and (b) the rate of entropy generation in the heat exchanger.
Answers: 1
Physics, 21.06.2019 19:30
Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1
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Physics, 22.06.2019 00:30
Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass
Answers: 1
Physics, 22.06.2019 16:40
Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.
Answers: 2
Physics, 22.06.2019 17:40
Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?
Answers: 1
Cold water (cp = 4.18 kj/kg⋅°c) leading to a shower enters a well-insulated, thin-walled, double-pip...
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