Hot water in a _______ can will cool off faster than hot water in any other color can
a. white b. red c. black d. silver
c
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Suppose you have a time-keeping device that always reads precisely 12:00 when the Sun crosses your meridian. What kind of time is this clock keeping?
A) apparent solar time B) mean solar time C) standard time D) universal time
Place a 1-kilogram block of iron at 40°C into 1 kilogram of water at 20°C and the final temperature of the two becomes
A) less than 30°C. B) at or about 30°C. C) more than 30°C.
In Gulliver's Travels, Jonathan Swift wrote about a country where astronomers had found that Mars had two moons. (The moons of Mars were unknown at that time)
"They have likewise discovered two lesser stars, or satellites, which revolve about Mars, whereof the innermost is distant from the center of the primary planet exactly three of his diameters, and the outermost five; the former revolves in the space of ten hours, and the latter in twenty-one and a half..." If this information were correct, what would the mass of Mars be? The radius of Mars is 3,393,500 m and G = 6.67 x 10-11 N•m2/kg2. A) 3.86 × 1024 kg B) 6.45 × 1023 kg C) 5.67 × 1021 kg D) 2.83 × 1021 kg E) 4.78 × 1020 kg
A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of 290k The atomic mass of neon is 20.2 g/mol
What is the mass of the neon gas in the flask. (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol) A) 2.7 × 10-2 B) 1.6 × 10-2 C) 1.3 × 101 D) 2.7 × 101 E) 2.7 × 103