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A patient is having a magnetic resonance imaging scan (an MRI) and has neglected to remove a circular, metallic bracelet. the resistance of the bracelet is .0123 ohm. the magnetic field within the MRI's solenoid is perpendicular to the opening of her bracelet. while taking the scan, the magnetic field decreases from 1.04 T to .43 T in .700 seconds. if the magnitude of the average induced current in the bracelet during this time interval is .4241 A, what is the area of the opening of the circular bracelet?
(in cm^2)
A monochromatic light source used in a diffraction experiment has a wavelength of 4.60 X 10^-7 m. What is the energy of a photon of this light
An ideal gas is taken through a quasi-static process described by P = alphaV2, How much work is done on the expanding gas in this process
A basketball of mass 610g and circumference 76cm is rolling without slipping on a gym floor. Treating ball as a hollow sphere, what fraction of its total kinetic energy is associated with its rotational motion.
A spring stretches by 0.0241 m when a 4.15-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 4.44 Hz
A Gaussian surface has thirty field lines leaving it when it surrounds a point charge of +10.0 and fifty-five field lines entering it when it surrounds an unknown point charge
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
What is swimmer velocity relative to the bank
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. How long does it take for the ball to reach the wall if it is 4.2 m away
An indoor swimming pool of depth 2m transfers heat at a rate of 100w/m2 to the 10m of air between the pool and the roof for 1000s. What is the temperature change of the air
A 3.0 m long rigid beam with a mass of 125 kg is supported at each end. An 65 kg student stands 2.0 m from support 1. How much upward force does each support exert on the beam
The spheres are brought into contact and then separated to a distance of 2.40 cm. Determine the magnitude of the force that each sphere now experiences, and state whether the force is attractive or repulsive.
A cannon fires a cannon ball at 999.16 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
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