If the Moon were covered with water, it would have
1) one high tidal bulge,
2) two high tidal bulges,
3) three high tidal bulges,
4) no tidal bulges,
which would follow from
5) the same reason that Earth has two high tidal bulges.
6) no centrifugal force tide would exist on the Moon.
7) the Moon being much less massive than Earth.
8) the center of mass of Earth-Moon system that lies halfway to the Moon.
Answer: 2, 5
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What is the most compelling piece of evidence that suggests that the dinosaurs were made extinct by the impact of an asteroid 65 million years ago?
A) a layer of sediment laid down at that time which is littered with dinosaur fossils B) dinosaur fossils are found in rock layers older than 65 million years but not younger than 65 million years C) a layer of sediment laid down at that time which is rich in the element Iridium (Ir), an element common in asteroids but less common on the Earth D) the crater from this impact can still be seen in the deserts of Arizona
A ball is thrown at an angle ? above the horizontal. In the presence of the acceleration due to gravity, how far below the straight-line path following its original direction of motion will the ball be at the end of 1.0 second?
A) 20 m B) 4.9 m C) 9.8 m D) 2.5 m E) None of the other choices is correct.
A fluid is drawn up through a tube as shown in the figure. If the height difference from the top of the tank to the bottom of the siphon is H = 1.40 m, then what is the outflow speed? Assume the pressure is the same at the top of the tank and at the siphon outlet
?
a.
3.70 m/s
b.
27.4 m/s
c.
5.24 m/s
d.
6.86 m/s
150 kcal of heat raises the temperature of 2.0 kg of material by 400 F°. What is the material's specific heat capacity?
A) 1.35 kcal/kg?C° B) 1.31 kcal/kg?C° C) 0.75 kcal/kg?C° D) 0.34 kcal/kg?C° E) 0.19 kcal/kg?C°