In an attempt to avoid “the bends” which occurs if a diver rises too quickly after having been at great depth in the ocean for a long period of time, a diver should come to the surface relatively slowly. What would the rate of change (in Pa/s) of the water pressure be on a diver in the ocean as he rose at 15 m/min? The density of seawater is 1017 
A. 15 kPa/s
B. 2.5 kPa/s
C. 250 Pa/s
D. 150 kPa/s
B. 2.5 kPa/s
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Substance A has a density of 3 g/cm3 and substance B has a density of 4 g/cm3. In order to obtain equal masses of these two substances, the ratio of the volume of A to the volume of B will be equal to
A) 1 : 4 B) 4 : 3 C) 3 : 4 D) : 1 E) 1 : 3
The total momentum of a flock of identical birds could be zero only if the birds are
A) taking off from the ground. B) flying in the same direction. C) flying in different directions. D) very tired and coming down to rest.
If the total translational kinetic energy of the molecules of oxygen in a container is 15 J at room temperature, what is the total rotational kinetic energy of these molecules?
a. 5 J b. 10 J c. 20 J d. 25 J e. 0 J
A person looking through eyeglasses sees __________ images
Fill in the blank(s) with correct word