Acarnot engine whose high-temperature reservoir is at 620 k takes in 550 j of heat at this temperature in each cycle and gives up 335 j to the low temperature reservoir.
(a) how much mechanical work does the engine perform during each cycle?
(b) what is the temperature of the low-pressure reservoir?
(c)what is the thermal efficiency of the cycle?
Answers: 1
Physics, 22.06.2019 03:30
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
Answers: 1
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 22.06.2019 17:00
Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.
Answers: 2
Acarnot engine whose high-temperature reservoir is at 620 k takes in 550 j of heat at this temperatu...
Computers and Technology, 24.03.2020 02:30
History, 24.03.2020 02:30
Mathematics, 24.03.2020 02:30
History, 24.03.2020 02:30
Arts, 24.03.2020 02:30
Mathematics, 24.03.2020 02:30
Mathematics, 24.03.2020 02:31
Mathematics, 24.03.2020 02:31
Mathematics, 24.03.2020 02:31
Mathematics, 24.03.2020 02:31