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An emf is induced in a conducting loop of wire1.30 {\rm m}long as its shape is changed from square to circular. Find the average magnitude of the induced emfif the change in shape occurs in 4.37 {\rm s}and the local 0.127-{\rm T}magnetic field is perpendicular to the plane of the loop.
Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. What is the terminal speed for this object in this liquid
An ideal gas at STP, originally occupying a volume of 0.115 m^3, expands isothermally until its pressure falls to 0.85 atm. How much heat flows into the gas
Tsunamis are deep ocean waves that usually result from the undersea earthquakes or landslides. What is the tsunami's wavelength
The work function of a certain metal is 3.00 eV. What is the kinetic energy of a photoelectric in both "J" and "eV" for an incident photon of wavelength 400.0 nm
a long straight metal wire of radius r1 3.10e-2 m is surrounded by a metalic cylindrical shell of inner radius r2
A crate is held at rest on a frictionless 53 degree ramp by a rope parallel to the incline. If the tension in the rope is 7000 N, what is the mass of the crate
The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 5.0 Wb from 14.0 Wb in a time of 0.020 s. What is the resistance of the wire
A film of MgF2 (n = 1.38) having thickness 1.68 10-5 cm is used to coat a camera lens. What are the three longest wavelengths that are intensified in the reflected light
A mechanic pushes a 2.4 103 kg car from rest to a speed of v, doing 5100 J of work in the process. During this time, the car moves 29.0 m. find the speed v and horizontal force exerted on the car
A curling stone with a mass of 7.00 kg moves across the ice at a speed of 1.35 m/s in the positive x direction. What is the initial kinetic energy
A circular coil of radius 6.0 cm has 1500 turns and a total resistance of 0.25. Initially it is in a region with a uniform magnetic field of 0.25 T perpendicular to the coil area. Find the average emf induced in the coil
The rms current in an RL circuit is 0.28 A when it is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 25 V. (a) Given that the inductor has an inductance of 170 mH, what is the resistance of the resistor? ? (b) Find the..
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