The image area on 35 mm film is 24 mm x 36 mm. What focal length lens of the following will allow an image of the moon, 
in diameter, to just fit on the film?
A. 2.8 m
B. 1.4 m
C. 0.85 m
D. 12 mm
E. 55 mm
A. 2.8 m
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Detect a star giving off more ultraviolet light than green light. What property of thestar can I estimate with this information?
a) Its chemical composition b) Its temperature c) Its density d) Its age e) Its distance from Earth
A boy throws a rock with an initial velocity of 2.15 m/s at 30.0° above the horizontal. If air resistance is negligible, how long does it take for the rock to reach the maximum height of its trajectory?
A) 0.110 s B) 0.194 s C) 0.215 s D) 0.303 s
If you wanted to know how much the temperature of a particular piece of material would rise when a known amount of heat was added to it, which of the following quantities would be most helpful to know?
A) initial temperature B) specific heat C) density D) coefficient of linear expansion E) thermal conductivity
A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coefficient of kinetic friction between the stone and the surface?
A) 0.13 B) 0.25 C) 0.30 D) 0.43 E) 0.80