A magnifier used for reading small print is shaped like a hemisphere 2.0 cm in radius, placed on top of a cylinder of the same radius and 2.0 cm tall. The flat side of the magnifier is placed directly over the print on a book

Where does the image of the print appear to be? (The index of refraction of the magnifier is 1.52.) A)

30.4 cm above the top of the magnifier
B)

12.7 cm above the top of the magnifier
C)

32.1 cm below the top of the magnifier
D)

12.5 cm below the top of the magnifier
E)

at the center of the hemisphere


D

Physics & Space Science

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A uniform 100-lb beam is held in a vertical position by a pin at its lower end and a cable at its upper end. A horizontal force (magnitude P) acts as shown in the figure. If P = 75 lb, what is the tension in the cable?



a.
54 lb

b.
69 lb

c.
47 lb

d.
61 lb

e.
75 lb

Physics & Space Science