In our lab experiment on ohm's law, the power supply is connected to a circuit containing one resistor, and a direct current of 1.5 a is drawn. if you connect a second identical resistor to the power supply in parallel with the first, (similar to what we did in the lab) how much current is drawn from the battery?
(a) 3.0 a
(b) 0.75 a
(c) 1.5 a
(d) 6.0 a
Answers: 3
Physics, 22.06.2019 06:20, lolweapon
Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.
Answers: 1
Physics, 22.06.2019 07:10, cannan
Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ât. the resistance of the coil is r, and the total charge is q = iât, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly âswipedâ past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be âswipedâ through the reader at exactly the right speed? why or why not?
Answers: 2
Physics, 22.06.2019 16:30, makaylahamrick
Which magnetic property best describes a magnetâs ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.
Answers: 1
In our lab experiment on ohm's law, the power supply is connected to a circuit containing one resist...
Mathematics, 21.05.2020 08:03
History, 21.05.2020 08:03
Mathematics, 21.05.2020 08:03
Mathematics, 21.05.2020 08:03
Mathematics, 21.05.2020 08:03
History, 21.05.2020 08:03