Which of the following objects would be found on the Moon's surface?
A) sedimentary rocks
B) meteoroids
C) meteors
D) meteorites
E) asteroids
D
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When warm air moves into a cold air mass, the less-dense warmer air rides up over the colder, denser air. This is very similar to
A) orographic lifting. B) adiabatic lifting. C) temperature inversion. D) what happens during a tornado.
Evidence for dark matter is exhibited by the
A) relatively similar speeds at which all stars in a galaxy orbit the galactic nucleus. B) speed at which galaxies orbit one another within clusters. C) degree to which galaxy clusters exhibit gravitational lensing effects. D) All of the above
A book is moved once around the perimeter of a tabletop with the dimensions 1.0 m × 2.0 m. If the book ends up at its original position, what is its displacement and what is the distance it traveled?
1.displacement of 0 m, distance traveled 0 m 2.displacement of 0 m, distance traveled 6 m 3.displacement of 6 m, distance traveled 6 m 4.displacement of 6 m, distance traveled 0 m
A steel plate weighing 27 kN is hoisted by a cable sling that has a clevis at each end. The pins through the clevises are 22 mm in diameter. Each half of the cable is at an angle of 358 to the vertical. The average shear stress in each pin is approximately:
(A) 22 MPa
(B) 28 MPa
(C) 40 MPa
(D) 48 MPa