Determine the coil inductance
A 220-turn coil carries 320mA . If the magnetic flux through the coil due to this current is 0.80Wb, what's the coil's inductance? Express your answer to two significant figures and include the appropriate units.
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Assume an elastic collision with the ground instantaneously reverses the velocity of the basketball while the tennis ball is still moving down because the balls have separated a bit while falling. The two balls meet in an elastic collision. To wha
A 3.3T magnetic field makes a 45 degree angle with a square loop 32cm on a side. What's the magnetic flux through the loop? Express your answer to two significant figures and include the appropriate units.
A magnetic field increases from 0 to 0.12 T in 1.8 s. How many turns of wire are needed in a circular coil 14 cm in diameter to produce an induced emf of 5.4 V?
Find the peak emf in this coil when it's rotating at 110Hz in a strong 6.6T field. Express your answer to one significant figure and include the appropriate units.
The estimate of the population proportion is to be within plus or minus .05, with a 99 percent level of confidence. The best estimate of the population proportion is .19. How large a sample is required?
A population is estimated to have a standard deviation of 13. We want to estimate the population mean within 3, with a 99 percent level of confidence.
You have a variable capacitor ranging from 5.9 pF to 9.9 pF . What inductor should be used with this capacitor in an FM radio receiver covering the entire FM band, 85MHz to 110MHz? Express your answer to two significant figures and include the app
What is the present value at a 10% discount rate of the depreciation tax shield for a firm in the 35% tax bracket that purchases a $50,000 asset being depreciated straight-line over a 5-year life to a zero salvage value?
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