El arco iris es un fenómeno que se produce principalmente por:
I. refracción de la luz
II. re...
Physics, 02.11.2020 04:20 malaysiasc93
El arco iris es un fenómeno que se produce principalmente por:
I. refracción de la luz
II. reflexión total interna de la luz
III. Interferencia luminosa
a) sólo I
b) sólo II
c) sólo III
d) sólo I y II
Answers: 2
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Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)
Answers: 3
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Blank liquids and gases exert a buoyant force on objects placed in them
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Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?
Answers: 1
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