A small uniform disk and a small uniform sphere are released simultaneously at the top of a high inclined plane, and they roll down without slipping. Which one will reach the bottom first?
A) the one of smallest diameter
B) the one of greatest mass
C) the disk
D) the sphere
E) They will reach the bottom at the same time.
D
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Divergent boundaries are areas of
A) tensional forces that stretch the crust and generate a spreading center. B) compressional forces that crunch the crust and generate a spreading center. C) compressional forces that crunch and shorten the crust by folding and faulting. D) plate collision.
The two elements a one-solar-mass star uses over the course of its entire evolution are _______________ and _____________
Fill in the blank(s) with correct word
A pair of narrow slits, separated by 1.8 mm, is illuminated by a monochromatic light source. Light waves arrive at the two slits in phase,
and a fringe pattern is observed on a screen 4.8 m from the slits. If there are 5.0 complete bright fringes per centimeter on the screen near the center of the pattern, what is the wavelength of the monochromatic light? A) 550 nm B) 600 nm C) 650 nm D) 700 nm E) 750 nm
In an engine operating in the Otto cycle, the final volume of the fuel-air mixture is one sixth the initial volume. Assume ? = 1.4 . The maximum theoretical efficiency of this cycle is
a. 17%. b. 49%. c. 51%. d. 56%. e. 83%.