Why was the discovery of a substantial magnetic field around Mercury a surprise? How was it detected?
What will be an ideal response?
In its close passes by Mercury, Mariner 10 found a field that is much stronger than Mercury's very slow rotation would have led us to expect with the dynamo theory.
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First Law of Thermodynamics: An ideal gas undergoes the process a?b?c?a shown in the pV diagram. In the figure, Pa = Pc = 240 kPa, Vb = Vc = 40 L, Va = 15 L, and Pb = 400 kPa. How much heat is gained by the gas in this a?b?c?a process?
A. 1000 J B. 1500 J C. 2000 J D. 2500 J E. 3000 J
Which is the most common type of spacecraft propulsion used today?
A) solar sails B) nuclear rockets C) ion engines D) chemical rockets
The ratio of the density of a material to the density of water is the __________
Fill in the blank(s) with correct word
A negative charge, if free, will tend to move
A) from high potential to low potential. B) from low potential to high potential. C) toward infinity. D) away from infinity. E) in the direction of the electric field.