Physics, 24.09.2019 23:30, cheaterman1616
An electromagnet is a device in which moving electric charges (current) in a coil of wire create a magnet. what’s one advantage of using electromagnets in devices?
a. electromagnets have a strong, constant magnetic field.
b. electromagnets are more powerful than permanent magnets.
c. electromagnets don’t need a source of electricity to work.
d. electromagnets can easily be turned on and off.
Answers: 1
Physics, 21.06.2019 20:30, PrincessIndia
3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?
Answers: 2
Physics, 22.06.2019 02:50, lilybear1700
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
An electromagnet is a device in which moving electric charges (current) in a coil of wire create a m...
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