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A solenoid 24.0cm long and with a cross-sectional area of 0.600cm^2 contains 420 turns of wire and carries a current of 75.0 A .
a) Calculate the magnetic field in the solenoid.
b) Calculate the energy density in the magnetic field if the solenoid is filled with air.
c) Calculate the total energy contained in the coil's magnetic field (assume the field is uniform).
d) Calculate the inductance of the solenoid.
A pulley system has an efficiency of 87.5 percent. How much of the rope must be pulled in if a force of 648 N is is needed to lfit a 150kg desk 2.46m .
Determine an average acceleration in coordinates with x-axis
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Speedy Sue, driving at 33.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 175 m ahead traveling with velocity 5.10 m/s. Sue applies her brakes but could accelerate only at -2.00 m/s2 because the road is wet. Will there be a co..
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