Physics, 20.05.2021 16:20, Bra1nPowers
What causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?
a metal striker that pulls on the magnet
a diaphragm that vibrates around the magnet
a current that rapidly switches direction
a device that opens and closes a circuit
Answers: 2
Physics, 21.06.2019 15:00, abbeygrace13
The optimistic view of human nature held by supporters of the humanistic perspective led to more positive views of human nature throughout the field of psychology. t or f?
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Physics, 22.06.2019 18:00, Messidapro2687
Find the mass by adding the numbers from the three sliders
Answers: 1
Physics, 23.06.2019 03:00, blancademarco1994
A75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a high-efficiency motor that has an efficiency of 95.4 percent. the motor operates 4368 hours a year at a load factor of 0.75. taking the cost of electricity to be $0.12/kwh, determine the amount of energy and money saved as a result of installing the high-efficiency motor instead of the standard motor. also, determine the simple payback period if the pu
Answers: 1
Physics, 23.06.2019 07:30, nataliatf9833
Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.
Answers: 1
What causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?
a m...
Mathematics, 23.12.2019 20:31