An ideal fluid flows through a pipe made of two sections with diameters of 1.0 and 2.0 inches, respectively. The speed of the fluid flow through the 2.0-inch section will be what factor times that through the 1.0-inch section?
a. 1/4
c. 8
b. 1/2
d. 4
A
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If a star has an apparent magnitude of 8 and an absolute magnitude of 6 it is
A. much farther than 10 parsecs away. B. slightly farther than 10 parsecs away. C. much closer than 10 parsecs away. D. slightly closer than 10 parsecs away. E. exactly 10 parsecs away.
The first probe carrying mankind's message to alien civilizations was:
A) Sputnik I. B) Mariner 4. C) Pioneer 10. D) Voyager I. E) New Horizons.
State the Third Law of Thermodynamics
What will be an ideal response?
When two bodies of different masses collide, the impulses they exert on each other are
a. equal for all collisions. b. equal but opposite for all collisions. c. equal but opposite only for elastic collisions. d. equal but opposite only for inelastic collisions. e. equal but opposite only when the bodies have equal but opposite accelerations.