The pressure at the bottom of aquarium A is greater than that at the bottom of aquarium B. Why might this be?
a. A is filled with fresh water, B has the same amount of salt water.
b. A is filled to a greater depth than B.
c. A has greater volume than B.
d. The bottom of aquarium A has smaller area than that of B.
e. none of the above
b
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A v vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the acceleration of the ball is zero. We know that at t = 5 s,
a. the slope of the curve is non-zero. b. the velocity of the ball is not changing. c. the curve is not crossing the time axis. d. the curve is at v = 0, t = 0.
You can increase the internal energy of a gas by heating it or by compressing it
Indicate whether the statement is true or false
When boiling your breakfast eggs while in the mountains, to compensate for altitude you should
A) use a hotter flame. B) boil the eggs for a shorter time. C) boil the eggs for a longer time. D) none of the above
Ultraviolet light has wavelengths that are ________ visible wavelengths.
A. the same energy as B. slower than C. shorter than D. faster than E. longer than