How many calories of heat are required to raise the temperature of 4 kg of water from 50°F to the boiling point?
A. 6.5 × 105
B. 3.6 × 105
C. 15 × 105
D. 360
E. 4 × 104
Answer: B
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The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, where did these elements come from?
A) They were produced by gravity in the solar nebula as it collapsed. B) They were produced by stars that lived and died before our solar system was born. C) They have been present in the universe since its birth. D) They were made by chemical reactions in interstellar gas.
Relate the formation of the Himalayas to plate tectonics
What will be an ideal response?
What area plates would a parallel plate 1.0 F capacitor have with a plate separation of 0.10 mm and a dielectric of constant 10?
A. 1000
B. 5500
C. 130 
D. 
E. 
Every second at Niagara Falls, some 5000 m3 of water falls a distance of 50 m. What is the increase in entropy per second due to the falling water? (Assume a 20°C environment)