Physics, 18.09.2019 05:10 elliottmpotts6647
Our 12 v car battery does not appear to be functioning correctly, so we measure the voltage with a volt meter and find that the voltage on the battery is only 9v. to fix the problem, we connect the battery to a charger which delivers a constant current of i = 15 a. after t = 75 min on the charger, we find that voltage on the car battery is now 12.6v. assuming that the voltage changed linearly during the charging process, how much energy was delivered to the car battery.
Answers: 3
Physics, 22.06.2019 03:50
Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?
Answers: 1
Physics, 22.06.2019 10:30
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
Physics, 22.06.2019 21:50
To fully describe the photoelectric effect, scientists must consider which of the following to be quantized? o a. both light and matter o b. matter only o c. light only o d. neither light nor matter
Answers: 2
Our 12 v car battery does not appear to be functioning correctly, so we measure the voltage with a v...
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