Physics, 11.09.2021 07:20 talainalover23
Show that if an object be n times the focal length to the right of principal focus of a concave mirror, the image will be 1/n times the focal length to the right of the focus and the magnification will be 1/n.β
Answers: 3
Physics, 21.06.2019 22:30
Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate
Answers: 2
Physics, 22.06.2019 00:00
An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge
Answers: 2
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 20Β°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kgΒ°c) enter at 160Β°c at a rate of 0.95 kg/s and leave at 95Β°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
Show that if an object be n times the focal length to the right of principal focus of a concave mirr...
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