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1. A 1000-turn loop (radius = 0.032 m) of wire is connected to a (20 ohm) resistor as shown in the figure. A magnetic field is directed perpendicular to the plane of the loop. The field points into the paper and has a magnitude that varies in time as B=gt, where g=0.25 T/s. Neglect the resistance of the wire.
2. What is the magnitude of the induced current?
3. What is the direction of the induced current ("clockwise" or "counterclockwise")?
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
A 17.0 m-long copper wire, 2.10 mm in diameter including insulation, is tightly wrapped in a single layer with adjacent coils touching, What is the length of the solenoid
A person in Inertial system S sees two objects moving parallel to one another on a straight path. Find the speed of one object with respect to the other
How many moles of oxygen are in an inflated basketball? Pressure in the ball is 181kPa, the temp is 310K, and diameter of ball is 36 cm
Find the average magnitude of the induced emf if the change. The magnitude of the charge on a parallel plate capacitor is 4uC and the potential difference between the plates is 80V. What is the capacitance of this capacitor.
A chest x ray uses 14 keV photons. A 65 kg person receives a 35 mrem dose from one x ray that exposes 25% of the patient's body
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
In a Hall-effect experiment, a current of 2.1 A sent lengthwise through a conductor 1.0 cm wide, 4.5 cm long, find the drift velocity of the charge carriers
You are participating in league bowling with your friends. Time after time, you notice that your bowling ball rolls to you without slipping on the flat section of track. What is the magnitude of the angular acceleration of the ball
Assume blood flow using poiseuille's law. If cholesterol reduces the diameter of an artery by 20%, by what percentage will the blood flow rate be reduced
A person sees a distant lightning strike, then 4.5 seconds later he hears the thunder clap. If it is 35 degrees Celsius, how far away was the lightning strike
An artillery gun is firing a shell with the initial velocity V0 =250 m/s at an angle 1 =60o to the horizontal. Find the time interval t between shots
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