A student wishes to build a telescope. She has available an eyepiece of focal length -5.0 cm. What focal length objective is needed to obtain a magnification of 10x?
What will be an ideal response?
Question 2
A solid cylinder and a hollow cylinder have the same mass and the same radius. Which statement is true concerning their moment of inertia about an axis through the exact center of the flat surfaces?
A) The hollow cylinder has the greater moment of inertia.
B) The solid cylinder has the greater moment of inertia.
C) Both cylinders have the same moment of inertia.
D) The moment of inertia cannot be determined since it depends on the amount of material removed from the inside of the hollow cylinder.
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