Physics, 25.02.2020 00:58 AndyCrasher
SUUDVA
3. a) What is a magnetic field?
b) State two methods of making magnets
4. a) Distinguish between permanent magnets
and temporary magnets.
b) i) What are electromagnets?
ii) State three uses of electromagnets
in everyday life.
c) State three way methods of making a
magnet.
Answers: 3
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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)
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Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp
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In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer
Answers: 3
SUUDVA
3. a) What is a magnetic field?
b) State two methods of making magnets
4. a) D...
3. a) What is a magnetic field?
b) State two methods of making magnets
4. a) D...
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