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Two coils are close to each other. The first coil carries a current given by i(t) = 5.60e-0.0250t sin 120πt, where i is in amperes and t is in seconds. At t = 0.835 s, the emf measured across the second coil is -2.75 V. What is the mutual inductance of the coils?
An astronaut tries to talk his way out of a traffic violation for running a red light (? = 670 nm) by telling the judge that the light appeared green (? = 540 nm) to him as he passed by in his expensive sports car. If this is true, how fast was the a..
a motorist suddenly notices a stalled car and slams on the brakes negatively accelerating at 6.6ms2 . unfortunately
The capacitance of an empty capacitor is 1.2µF. The capacitor is connected to a 12-V battery and charged up. What is the dielectric constant for the material
25g of copper pellets are removed from a 300 degrees C oven and immediately dropped into 90 mL of water at 25 degress C in an insulated cup. What will the new water temp be
When a 2.90 kg object is hung vertically on a certain light spring described by hooke's law, if the 2.90-kg object is removed, how far will the spring stretch if a 1.45 kg block is hung on it
The wheel weighs 70 kg, and is 120 cm in diameter. you mount the wheel by its central axis, What is the angular velocity of the wheel at the end of the fall
a spherical ballon with radius 1.0m consists of an aluminum coated mylar. how many electrons must be deposited on the
A tetherball leans against the smooth, frictionless post to which it is attached. what is the force the pole exerts on the ball
A very thin 25 centimeter copper bar is aligned horizontally along the east-west direction. find what potential difference is induced across its ends
A 60.0- and a 60.0- resistor are connected in parallel. When this combination is connected across a battery, Determine the internal resistance of the battery
A three-phase synchronous generator is connected to a step-up transformer T1, which is connected to a 60km long transmission line. As the far end of the line, a step-down transformer bank T2 is connected. The secondary of T2 supplies two loads L..
An electrically neutral charge can be given a net charge by several means. Does this violate the conservation of charge? Explain
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