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C21Worksheet

# C21Worksheet - Physics Honors Chapter 21 Worksheet A...

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Physics Honors: Chapter 21 Worksheet A proton (charge q = 1.60 x 10 -19 C) travels at 3.0 x 10 6 m/s [E45ºU] through a 2.60 x 10 -3 T magnetic field, experiencing a force of 6.0 x 10 -16 N. 1) What is the angle between the direction of the magnetic field and the direction of the motion of the proton? 29º 2) If the force on the proton acts toward the south, what is the direction of the magnetic field? [E74ºU] 3) If the force on the proton acts toward the north, what is the direction of the magnetic field? [E16ºU] A metal rod of mass m = 100 g and length L = 1.0 m rests on two fixed, frictionless, conducting rails, as seen from above in the diagram. Switch S is closed at time t = 0, allowing the battery V b = 50 V to generate current through the top rail, down through the rod, and then through the other rail back to the battery. The wires have a combined resistance R = 2 and they are immersed in a uniform magnetic field of strength B = 0.02 T pointing downward (as shown). 4) What is the current in the circuit at time t = 2.0 s? 25.0 A 5) What is the force on the rod at time t = 2.0 s? 0.50 N [R] 6) What is the velocity of the rod at time t = 2.0 s? 10.0 m/s [R] A solenoid of length L = 20 cm consists of a wire wrapped around a thin plastic cylindrical shell of radius r = 2 cm. The wire circles the plastic cylinder N = 500 times and carries a current

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C21Worksheet - Physics Honors Chapter 21 Worksheet A...

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