PH 102 Midterm: PH102_ex2_s08_formA
Document Summary
Spring 2008: answer 6 of the 8 problems below. All problems have equal weight: indicate which problems you have attempted by lling in the adjacent box, show your work for full credit. Signi cant partial credit will be given: you are allowed 2 sides of a standard 8. 5x11 in piece of paper with notes/formulas and a calculator. (cid:3) 1. Eld of the current is horizontal and at a right angle to the horizontal component of the earth"s magnetic eld. Under these circumstances, by how many degrees will the compass deviate from true north? (cid:3) 2. A 50 kv direct-current power line consists of two conductors precisely 2. 0 m apart. The rate of ow of a conducting liquid can be measured with an electromagnetic owmeter that detects the voltage induced by the motion of the liquid in a magnetic eld. Suppose that a plastic pipe of diameter 0. 10 m carries beer with a speed of 1. 5 m/s.
