Which of the following is not a state thermodynamic variable?
(a) The Gibbs free energy
(b) Entropy
(c) Heat
(d) Enthalpy
(c) Heat
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A ___________________ binary is shown in the above simulated spectra
a. single-lined spectroscopic
b. double-lined spectroscopic
c. visual
d. eclipsing
According to the Big Bang cosmological model, which of the following correctly describes the order of events in the first few minutes of the universe’s existence?
The operation of a microwave oven makes use of
A) the polar nature of water molecules. B) flip flopping of polarized molecules. C) an oscillating electric field. D) all of the above E) none of the above
During the Pleistocene ice age
A) there was one large episode of glacial advance. B) there were several episodes of glacial advance and retreat. C) Earth's entire surface was covered with ice. D) Earth's oceans were completely frozen.