The top quark
a. is the only quark not yet detected experimentally.
b. has been shown not to exist.
c. was discovered at Fermilab.
d. none of the above
c
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Thermal Expansion: A large vat contains 1.000 L of water at 20°C. What volume will this water occupy when it is heated up to 80°C? Water has a volume expansion coefficient of 210 × 10-6 K-1.
A. 1.600 L B. 1.013 L C. 0.987 L D. 0.9987 L
What is the relevance of tidal heating to the possibility of life on jovian moons?
a. Tidal heating can lead to subsurface zones of liquid water. b. Tidal heating causes surface oceans to slosh back and forth with the tides. c. Tidal heating is thought to be necessary for life on any world. d. Tidal heating can melt surface ices into liquid lakes and seas.
Compared to the distance between Earth and Mars, the distance between Jupiter and Saturn is ________
A) about the same B) just slightly less C) much smaller D) much larger
Radiation: In an electric furnace used for refining steel, the temperature is monitored by measuring the radiant power emitted through a small hole in the wall of the furnace, of area 0.5 cm2. This hole acts like a perfect blackbody radiator having the same temperature as the interior of the furnace. If the temperature of the furnace (and therefore of the hole) is to be maintained at 1650°C, how much power will the hole radiate?
A. 20 W B. 30 W C. 40 W D. 50 W