Find out the amplitude of the resultant alternating current
A inductor of 42.9 mH is joined to an ac generator with εm = 40.0 V. Find out the amplitude of the resultant alternating current when the frequency of the emf is (i) 1.08 kHz and (ii) 6.62 kHz?
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The arrow strikes a pterodacvtyl (prehistoric flying reptile) traveling at constant velocity east-wards. You keep watching straight up and stand there without moving. Will the carcass of the pterodactyl land on your head? If so, explain why? If no
A car tune-up manual calls for tightening the spark plugs to a torque of around 30.0 N•m. To attain this torque, with what force should you pull on the end of 30.0 cm long wrench when you pull at the angles to the wrench shaft?
Which of these is the valid geometric definition of the parabola? Set of points equidistant from a directrix and the focus not on directrix.
You are in your latest Ferrari when you make a decision to test its braking capability. You find out that it takes 10 seconds of actual braking time to stop the car on a road which is perfectly horizontal. i) Describe the braking capability of the
The hard disk of a laptop computer or some MP3 players includes one or more platters (spinning disks), each containing an angular speed of typically 10,000 rpm, a radius of 4.0 cm, and a mass of around 50 g. (i) Determine the kinetic energy of one
The absolute potential at precise center of a square is 3.0 V if a charge of +Q is positioned at one of the square's corners. Find out the absolute potential at the square's center if each of the other corners is as well filled with a charge of +Q
The absolute potential at a distance of around 2.0 m from a negative point charge is -100 V. Find out the absolute potential 4.0 m away from the similar point charge?
Assume that 1.70 x103 kg of Fe is acquired from a3.93 x103 kg sample of Fe2O3. Assuming that the reaction goes to completion, determine the percent purity of Fe2O3 in the original sample?
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