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A circular loop of wire of radius 12.1 cm is placed in a magnetic field directed perpendicular to the plane of the loop, as shown in the figure below. If the field decreases at the rate of 0.490 T/s in some time interval, what is the magnitude of the emf induced in the loop during this interval?
A student calculates the frequency of a waveform produced by a tuning fork to be 303 Hz. If the tuning fork is stamped with a frequency of 279 Hz, what is the percent error for the experiment
A block of mass 10 kg is resting on a frictionless ramp. The ramp is free to slide on a horizontal, frictionless table and has a mass of 40 kg. What is the acceleration of the ramp
A bottle of wine known as a squinch contains a volume of 1.9 liters. A bottle known as a serroboam contains 8.3 U.S. gallons. How many squinches are there in one serroboam
a cicuit with a 112.0 m aluminum wire, with a diameter of 0.182 mm, what is the potential difference applied to the circuit after the wire is cooled
You do 6.5 J of work to stretch a spring with k = 190 N/m , starting with the spring unstretched. How far does the spring stretch
Two parallel wires lie in the plane of the paper with equal magnitude 5.0 A currents in the opposite direction. find the magnitude and direction of the magnetic field
A pumpkin sets in front of a mirror with radius of curvature of -20 cm. How far away is the pumpkin from the mirror
A flatbed truck with a box sitting on the bed accelerates from rest on level ground. The truck's speed as a function of time is 15t - 2t2 during this acceleration. What force does that work on the box
A 30 kg child is sitting on the outer edge of a 100 kg carousel with a radius of 2.0 m. What is the moment of inertia of the carousel and child
a hydrogen atom initially in its ground state absorbs a photon of energy 2.09 x 10^-18 J. Calculate the frequencies of every different photon emitted in this process
A river flows due east at 1.43 m/s. A boat crosses the river from south shore to the north shore by maintaining a constant velocity of 10.5 m/s due north relative to the water.
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S = 1.38 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser? (a) the electric fie..
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