Physics Laboratory Manual
Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 10, Problem 4PLA

In Figure 10-4 the force F2 = 15.0 N acts at the point 70.0 on. What is the magnitude of the torque due to F2 about an axis through point B and perpendicular to the page? Is the torque clockwise, or is it counterclockwise? Show your work and give correct units.

Chapter 10, Problem 4PLA, In Figure 10-4 the force F2 = 15.0 N acts at the point 70.0 on. What is the magnitude of the torque

Figure 10-4 Meter stick with two forces F1 and F2 acting at points shown.

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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.
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