A chemoautotroph gets its energy from
A) chemical reactions and its carbon from its environment
B) the Sun and its carbon from other organisms
C) chemical reactions and its carbon from other organisms
D) the Sun and its carbon from its environment
A
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The measured temperature of the cosmic background radiation is ____________________
Fill in the blank(s) with correct word
If your mass is 60 kilograms on Earth, what would your mass be on the Moon?
A) 10 pounds B) 10 kilograms C) 360 kilograms D) 60 kilograms E) 60 pounds
A heat engine operating between a pair of hot and cold reservoirs with respective temperatures of 400 K and 200 K will have what maximum efficiency?
a. 50% b. 50% c. 40% d. 45% e. 25%
A uniform electric field, with a magnitude of 500 V/m, is points in the +x direction. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 m?
A) 0.50 kV B) 1.0 kV C) 2.0 kV D) 4.0 kV E) 5.0 kV