That Mercury has a large iron core is evidenced by
a. the large lobate scarps.
b. the large mean density of Mercury.
c. the lava flows near Caloris Basin.
d. all of the above
e. none of the above
B
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Two light bulbs are connected to a wall outlet as shown below. Bulb #1 is 100 W and Bulb #2 is 40 W. Which statement is true?
Compared to the Earth, the Moon is no longer geologically active because
a. it is rotating too slowly. b. its radioactive elements were never abundant. c. it is much smaller in mass. d. its crust is too thin. e. it does not have water on its surface.
A constant force F acts on block 1 with mass m and block 2 with mass 2m. Which graph correctly represents the accelerations of the blocks ?
A. 
B. 
C. 
A supertanker filled with oil has a total mass of 6.1 × 10^8 kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the bottom of the ship is below sea level. (?sea = 1020 kg/m3.)
a. 10 m b. 15 m c. 20 m d. 25 m e. 30 m