Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 28, Problem 5PLA
A resistor is known to obey Ohm’s law. When there is a current of 1.72 A in the resistor, it has a voltage drop across its terminals of 7.35 V. lf a voltage of 12.0 Vis applied across the resistor, what is the current in the resistor? Show your work.
I = ______ A
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Imagine you are out for a stroll on a sunny day when you encounter a lake. Unpolarized light from the sun is reflected off the lake into your eyes. However, you notice when you put on your vertically polarized sunglasses, the light reflected off the lake no longer reaches your eyes. What is the angle between the unpolarized light and the surface of the water, in degrees, measured from the horizontal? You may assume the index of refraction of air is nair=1 and the index of refraction of water is nwater=1.33 . Round your answer to three significant figures. Just enter the number, nothing else.
Chapter 28 Solutions
Physics Laboratory Manual
Ch. 28 - Prob. 1PLACh. 28 - Two resistors R1 and R2 are connected in parallel...Ch. 28 - Prob. 3PLACh. 28 - If a circuit element carries a current of 3.71 A,...Ch. 28 - A resistor is known to obey Ohms law. When there...Ch. 28 - The resistivity of copper is 1.72 108 -m. A...Ch. 28 - A wire of cross-sectional area 5.00 106 m2 has a...Ch. 28 - Three resistors of resistance 20.0 , 30.0 , and...Ch. 28 - Three resistors of resistance 15.0 , 25.0 , and...
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