Which law explains why a skater can spin faster by pulling his arms closer to his body, or spin slower by spreading his arms out?
A) the law of gravity
B) Newton's third law of motion
C) the law of conservation of momentum
D) the law of conservation of angular momentum
E) the law of conservation of energy
D) the law of conservation of angular momentum
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An RBE
A) is an effective dose of 1 Gy. B) is equivalent to 3.70 × 1010 decays/s in radium. C) is 10-2 J/kg. D) when multiplied into dosage, yields the effective dose. E) is an SI unit of absorbed dose = 1 J/kg = 100 rad.
What is the value for the total energy that reaches each square meter of Earth from the Sun each second called?
a. Solar constant b. Solar maximum c. Sunspots d. Solar wind
Energy lost by an isolated pulsar is carried away by a _____________
Fill in the blank(s) with correct word
An ideal gas with ? = 1.67 is initially at 0°C in a volume of 10.0 L at a pressure of 1.00 atm. It is then expanded adiabatically to a volume of 10.4 L. What is the final temperature of the gas?
A) -7.1°C B) 2.5°C C) -23°C D) 68°C E) -20°C