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A circular coil enclosing an area of 140 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 3.0 Ohms, and the ends of the wire are connected to form a closed circuit. Initially, a 1.8-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.8 T and points downward through the coil. If the time required for the field to reverse directions is 0.20 s, what is the average current in the coil during that time?
To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.65, What is the height of the power line
A 60 ohm resistor is connected in series with a 30x10^-6 capacitor and a generator having a maximum voltage of 120 volts, what is the phase angle of the circuit
A counter with negligible background gives exactly 10,000 counts in a 1-s period when a standard source is in place. What is the counter dead time
A 3.3kg block sits on a table. A 3.0kg bullet is fired horzontally at a speed of 520 m/s, find the speed of the block immediatley after the bullet exits
Three identical point particles that have charge q are at the vertices of an equilateral triangle that is circumscribed by a circle of radius a that lies in the z = 0 plane, What is the electric potential at the origin
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
A 11.0nC point charge is at the center of a 2.50m× 2.50m × 2.50m cube. find the electric flux through the top surface of the cube
A parallel-plate capacitor has fixed charges +Q and -Q. The separation of the plates is then doubled. (a) By what factor does the energy stored in the electric field change? (b) How much work must be done in doubling the plate separation from d to..
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
A football is punted with an initial velocity of 28.7 m/s and an initial angle of 54.1o. What is its hang time
You are assigned an experament to find g by dropping a 5 cm styrophoam sphere. Construct an uncertainty budget for this hypothetical situtation
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
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