Three spaceships A, B, and C are in motion, as shown in the figure. The commander on ship B observes ship C approaching with a relative velocity of 0.78c
The commander also observes ship A, advancing in the rear, with a relative velocity of 0.31c. What is the velocity of ship C, relative to an observer on ship A?
A) 0.88c
B) 0.38c
C) 1.4c
D) 0.62c
E) 1.1c
Answer: A
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Which of the following is not a fundamental quantity?
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A 
cm rectangular piece of copper is at a temperature of 10.0
The coefficient of linear expansion of copper is 
If the temperature of the copper rectangle increases its temperature by 2.00
then what is the change in the area of the rectangular piece of copper?
A. 
B. 
C. 
D. 
E. 
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a. 27° N of W b. 58° N of W c. 27° N of E d. 17° N of W e. 17° N of E
Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum
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