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1. A beam of unpolarized light with an intensity of 110 W/m2 is incident on a...

1. A beam of unpolarized light with an intensity of 110 W/m2 is incident on a stack of four polarizing sheets that are lined up so that the characteristic direction of each is rotated by 30◦ clockwise with respect to the preceding sheet. What is the intensity of the light passing through the last sheet?

2. A solenoid with 400 turns per meter carries a current of 0.40 A. There is a 10-turn coil in the center of the solenoid, with an axis parallel to the axis of the solenoid. The coil has a resistance of 1.5 Ω and an area of 3.54 cm2 . A switch is opened on the solenoid and the current in the solenoid goes to zero in a time of 0.050 s. (a) What is the magnetic field of B1? (b)What is the average current induced in the coil?

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