The colors dispersed by a prism are due to different light
A) speeds inside the prism.
B) directions inside the prism.
C) energies inside the prism.
D) none of the above
Answer: A
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Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a 30.0 degrees frictionless incline. The vertically hanging mass is 4.0 kg and the mass on the incline is 6.00 kg. The acceleration of the 4.00 kg mass is
A. 0.980 
B. 3.92
C. 5.75
D. 6.86
E. 7.84
Figure R5.10 shows a two-observer space time diagram for an Other Frame that moves at a speed of 0.5 relative to the Home Frame. What are the coordinates of event P in the Other Frame?
A. t ? = 3.4 s, x ? = 2.6 s
B. t ? = 5.2 s, x ? = 2.6 s
C. t ? = 2.9 s, x ? = 1.2 s
D. t ? = 3.7 s, x ? = 3.4 s
E. Other (specify)
How much heat is needed to raise the temperature of 200 g of lead (c = 0.11 kcal/kg ? °C) by 10 C°?
A) 33.0 cal B) 330 cal C) 2000 cal D) 20 kcal
A rock is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration of objects in free fall is 1.5 m/s2 and there is no atmosphere. How long does it take for the laser to reach the maximum height?
A) 8.0 s B) 11 s C) 14 s D) 16 s