Air resistance on a high-speed projectile shortens its
A) range.
B) maximum height.
C) both of these
D) none of the above
Answer: C
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Two balls of the same material, ball A and ball B, float on the surface of a pool filled with fresh water of 1000 
density. If ball A has 45% of its volume above the water, and ball B has 55% of its volume above the water, what is the ratio of radii of ball A to that of ball B?
A. .818 B. .935 C. 1.07 D. 1.22 E. None of these F. .905
Which of the following properties can be inferred from the star's orbital period?
What will be an ideal response?
Ralph walks 3 m to the left in 2 seconds, then 4 m to the right in 3 seconds. Next, he stops for 3 seconds, and finally walks 5 m to the left in 4 seconds
Ralph's displacement is closest to:
1.0 m 2.2 m 3.4 m 4.6 m 5.8 m 6.10 m 7.12 m 8.14 m 9.The negative of one of the choices above 10.Impossible to determineSince Lice = 333 J/g, the change in entropy (in cal/K) when 1.00 kg of ice melts is
a. 144 b. 291 c. 312 d. 516 e. 80