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The drawing shows four insulated wires overlapping one another,forming a square with 0.050-m sides. All four wires are much longerthan the sides of the square. The net magnetic field at the centerof the square is 73 μT directed into the drawing. Calculate the current I.
A 450 loop circular armature coil with a diameter of8.0cm rotates at 120 rev/s in a uniform magnetic field of strength 0.55 T. What is the rms voltage output of the generator
An 8.8 mH inductor is connected to an ac generator (10.0 V rms, 600 Hz). Determine the peak value of the current supplied by the generator
q1. a house is heated by a 24.0 kw electric furnace which uses resistance heating. the rate for electrical energy is
A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20? and increasing at the rate of 10..
A 30g bullet strikes a .650kg block attached to a fixedhorizontal spring whose spring constant is 5.90x103N/mand sets it into vibration with an amplitude of 20.0cm. What was the speed of the bullet before impact
q1. a force vector points at an angle of 50.6deg above the x axis. it has a y component of 280 newtons. calculate the
A consumer upset with the latest trend of postal rate increases has decided to try to send letters by balloon even though they may not reach their intended destination
A copper wire has a 25 m-ohmic resistance at 20 degrees C. When the wire is carrying a current, What is the change in the wire's resistance
A computer disk is 8.0 in diameter. A reference dot on the edge of the disk is initially located at the disk accelerates steadily for 0.50, reaching 2000.
Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). how much kinetic energy does the ball have
Two trains, each having a speed of 20 km/h, are headed at eachother on the same straight track. A bird that can fly 40 km/h fliesoff the front of one train when they are 40 km apart and headsdirectly for the other train. On reaching the other trai..
An object with height of 5 cm is placed 30 cm away from a diverging lens with focal length f = - 20 cm. Find the location and height of the image. What it the lateral magnication? Is the image upright or inverted? Real or virtual? Use a ruler to draw..
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