________ used the extensive records of planetary positions measured by ________ to discover that the orbits of the planets are ________.
A. Kepler; Galileo; elliptical
B. Kepler; Tycho; elliptical
C. Tycho; Kepler; elliptical
D. Tycho; Kepler; circular
Answer: B
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Climate models which ignore human activity
A) completely fail to match real climate data B) match real climate data quite well C) match real climate data perfectly D) match real climate data, but only poorly
"Ice that burns" is better known as
a. propane. b. frozen oil. c. coal. d. methane hydrate.
A window glass that is 0.5 cm thick has dimensions of 3 m by 1.5 m. The thermal conductivity of this glass is 0.8 W/m ? K
If the outside surface of the glass is at -10°C and the inside surface is at 20°C, how much heat flows through the window in every hour? A) 50 MJ B) 60 MJ C) 70 MJ D) 80 MJ
Industrial wastes are more difficult to process for energy than municipal wastes
What will be an ideal response?