In strength, the magnetic fields of Uranus and Neptune are
A) very different, with flopped over Uranus having no field, and Neptune a strong one.
B) similar, with both about 100 times stronger than our own.
C) even stronger than that of Jupiter.
D) perfect fits for the Dynamo theory.
E) like Jupiter and Saturn, due to mantles of liquid metallic hydrogen.
B
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The ionosphere
a. reflects all EM waves. b. reflects high frequency radio waves. c. reflects low frequency radio waves. d. is responsible for the greenhouse effect. e. absorbs ultraviolet light in sunlight.
Shell Radius: A hydrogen atom with a barely bound electron may have an average radius as large as a bacterium, which is a radius of 14 ?m. What is the nearest principal quantum number of the atom in this state? The radius for ground state hydrogen is 0.0529 nm.
A. 514 B. 51 C. 16 D. 264,650
In general, sound travels faster through:
a) solids than through gases b) gases than through solids c) gases than through liquids d) empty space than through matter
A 50-gram ball moving +10 m/s collides head-on with a stationary ball of mass 100.g. The collision is elastic. What is the speed of each ball immediately after the collision?
What will be an ideal response?