The dimensional equivalent of the quantity impulse in terms of the fundamental quantities (mass, length, time) is which of the following?
a. MLT?1
b. ML2T?2
c. MLT
d. MLT?2
a
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Density: A hollow sphere of negligible mass and radius R is completely filled with a liquid so that its density is ?. You now enlarge the sphere so its radius is 2R and completely fill it with the same liquid. What is the density of the enlarged sphere?
A. 8 ? B. 4 ? C. ?/2 D. ? E. ?/8
Astronomers can measure the diameter of our Milky Way Galaxy by plotting the position of globular star clusters.
Answer the following statement true (T) or false (F)
In twice the time, an object will attain a speed that is
A) four times as fast. B) 16 times as fast. C) 12 times as fast. D) twice as fast. E) eight times as fast.
A certain amount of a monatomic gas is maintained at constant volume as it is cooled by 50 K. This feat is accomplished by removing 400 J of energy from the gas. How much work is done by the gas?
A) zero B) 200 J C) 400 J D) -400 J E) none of the above