The best way to measure the age of an ancient bone is
A. potassium-argon dating
B. neutron activation
C. controlled thermonuclear fusion
D. radiocarbon dating
Answer: D. radiocarbon dating
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Explain the two sources of heat that "melted" a planet during its formation
What will be an ideal response?
What is the average kinetic energy of an ideal gas molecule at 569°C? (The Boltzmann constant is 1.38 × 10-23 J/K.)
A) 1.74 × 10-20 J B) 5.81 × 10-21 J C) 1.18 × 10-17 J D) 3.93 × 10-19 J
A model for combining the electromagnetic, weak and strong nuclear interactions into a single basic force is a(n)
a. electroweak theory b. GUT c. quark theory d. generalized theory of relativity e. theory of strangeness
In a given reversible process, the temperature of an ideal gas is kept constant as the gas is compressed to a smaller volume. Select the true statement from among the following:
A) The gas must absorb heat from its surroundings. B) The gas must release heat to its surroundings. C) The pressure of the gas also stays constant. D) The process is adiabatic. E) It is impossible to predict on the basis of this data.