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You have a small electromagnet that consumes 320 W from a residential circuit delivering 115 V at 50.0 Hz. Using your AC multimeter, you determine that the unit draws 3.54 A rms.
What is the internal resistance of the electromagnet?
What is the inductance of the electromagnet?
Consider a 9.5-mm-diameter wire made from copper (mass density 8.9 g/cc, resistivity 1.7E-8 ohm-m). What is the electric field (in V/m) in the wire
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal, How much work is done by the rope on the sled
(a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a as necessary.) Magnitude Direction ° (counterclockwise from the horizontal) (b) What is the total electric f..
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
Two waves traveling on a string in the same direction both have a frequency of 125 Hz, What is the amplitude of the resultant wave if the original waves differ in phase by each of the following values
An air-track glider attached to a spring oscillates between the 10 cm mark and the 60 cm mark on the track. The glider completes 10 oscillations in 48 s. What is the maximum speed of the glider
A doubly charged helium atom whose mass is 6.6 ×10?27kg is accelerated by a voltage of 2700V, What is its period of revolution
The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net, With what minimum average speed must he move
Determine the tension in an elevator cable if the 2000 kg elevator is accelerating upward with an acceleration of 1.8 m/s^2
A step down transformer produces a voltage of 5.3 V across the secondary coil when the voltage across the primary coil is 100V. What voltage appears across the primary coil
A 15.0kg bucket of water is suspended by a rope of negligible weight that is wrapped around a solid cylinder 0.300m in diameter, What is the tension in the rope while the bucket is falling
A car traveling at 86 km/h strikes a tree. The front end of the car compresses, What was the average acceleration of the driver during the collision
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