Which is an example of matter in a plasma phase?
A) dry ice
B) a torch flame
C) molten lava
D) liquid hydrogen
E) none of the above
Answer: B
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The Copernican model of the solar system has the planets orbit the Sun along elliptical paths
a. True b. False Indicate whether the statement is true or false
Using an orbit size of 8 kpc, and a period of 225 million years, the mass of our Galaxy is found to be closest to:
A) 106 solar masses. B) 108 solar masses. C) 1010 solar masses. D) 1011 solar masses. E) 1012 solar masses.
What is an artificial star?
A) a meteor B) the unseen member of a binary star system C) a satellite orbiting Earth D) a point of light in Earth's atmosphere created by a laser for the purpose of monitoring atmospheric fluctuations E) a possible source of dark matter in the universe
What is the difference between heat conduction in series and in parallel between two materials?
What will be an ideal response?