Which is the latest stage (of those given below) in the evolution of a star?
A)
red giant
B)
white dwarf
C)
protostar
D)
geodesic
E)
supernova
E
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Water with a density of 1,000 
flows through a 2.00 cm diameter pipe with a velocity of 2.40 m/s. What is the volume flow rate?
A. 
B. 
C. 
D. 
E. 
SAE 50 oil at 70ºF flows through a 2 ft long copper tube of ¼ inch inside diameter. What must the pressure drop be through the tube if 10 lbm/min of oil is flowing through the tube?
What will be an ideal response?
Assuming the conditions ripe for life and intelligence abound in the Galaxy, what factor limits the number of galactic civilizations?
A) the lack of metals for technology B) the number of supernova explosions C) the expansion of the Universe D) the average survival time of the civilizations E) the speed of technological development
The figures below represent interference fringes. The distances from the screen to the slits is the same for each figure, and the planes of the screen and the slits are parallel. Which figure(s) represent(s) slits with the smallest spacing d between the slits? The white spaces represent the interference maxima.
A. I. B. II. C. III. D. IV. E. V.