What are the clouds of Uranus composed of?
a. hydrogen
b. helium
c. carbon dioxide
d. methane
e. sulfur
d
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Significant Figures: A dog has three puppies. Spot weighs 12 ounces. Rascal weighs 9.5 ounces. Socks weighs 10.2 ounces. What is the total weight of the litter expressed to the correct number of significant figures?
A. 31.7 ounces B. 31 ounces C. 32 ounces D. 30 ounces E. 31.70 ounces
Dimensional Analysis: The distance d through which a beam of length L is deflected when it is subjected to a fixed load may be described by the relationship d = RL2. What are the SI units of the constant R?
A. m3 B. m2 C. m D. m-1 E. R is dimensionless
The force responsible for a car moving steadily along a no-friction icy banked curve is due to
A) centrifugal effects. B) the normal force at right angles to the curved surface. C) the radial component of the normal force. D) none of the above
True or False: People traveling near the speed of light relative to Earth would measure their lifespans and find them, on the average, longer than the average human lifespan as measured on Earth
1.False 2.True