Which of the following are found on Triton?
a. craters
b. flooded basins
c. atmospheric clouds
d. a thick nitrogen atmosphere
e. craters, flooded basins, atmospheric clouds, and a thick nitrogen atmosphere
e
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A train travels at a constant speed of 60.4 miles per hour for 101.5 minutes. What distance does the train cover?
A) 100 miles B) 102 miles C) 102.2 miles D) 102.18 miles E) 102.181 miles
Two metal rods, one silver and the other gold, are attached to each other
The free end of the silver rod is connected to a steam chamber, with a temperature of 100°C, and the free end of the gold rod to an ice water bath, with a temperature of 0°C. The rods are 5.0 cm long and have a square cross-section, 2.0 cm on a side. What is the temperature at the point where the two rods are in contact with one another? The thermal conductivity of silver is 417 W/(m•K) and that of gold is 291 W/(m•K) No heat is exchanged between the rods and the surroundings, except at the ends. A) 39°C B) 41°C C) 47°C D) 53°C E) 59°C
Which of the following is not one of the three main strategies used to measure the mass of a galaxy clusters?
A) measuring the speeds of galaxies orbiting the cluster's center B) studying X-ray emission from hot gas inside the cluster C) observing how the cluster bends light from galaxies located behind it D) measuring the temperatures of stars in the halos of the galaxies
If you exert 6 N across a distance of 2 m in 3 s you'll deliver a power of
A) 1 W. B) 3 W. C) 4 W. D) 6 W. E) more than 6 W