Dripstone formations that form on cavern floors are called _____________
a. stalactites
b. pool stones
c. stalagmites
d. sedimentary
c
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A rope pulls on the lower block in the figure with a tension force of 20 N. The coefficient of kinetic friction between the lower block and the surface is 0.16
The coefficient of kinetic friction between the lower block and the upper block is also 0.16. The pulley has no appreciable mass or friction. What is the acceleration of the 2.0 kg block? A) 4.1 m/s2 B) 5.1 m/s2 C) 8.4 m/s2 D) 9.2 m/s2
The speed of the current warming trend is no different than those seen in fossil records
Indicate whether the statement is true or false
In a classroom on the first spaceship to an extrasolar planet--there are children because the trip will take 200 years--a teacher is showing charge Q uniformly distributed along a conducting rod of length L0 to produce linear charge density ?0. As observed on Pluto when the spaceship passes it at 0.800c, the linear charge density 
is
A. 0.360 ?0. B. 0.600 ?0. C. 0.800 ?0. D. 1.00 ?0. E. 1.67 ?0.
A 2.00-kg block of ice at 0.00°C is dropped into a very large lake at 25.0°C and completely melts. For water, the heat of fusion is 3.35 × 105 J/kg,
the heat of vaporization is 2.25 × 105 J/kg, and the specific heat is 4190 J/kg?K. The net change in entropy of the system consisting of the ice and the lake due to this melting process is closest to A) 2.45 × 103 J/K. B) 2.24 × 103 J/K. C) 2.06 × 102 J/K. D) -2.45 × 103 J/K. E) -2.06 × 102 J/K.