Active galaxy radio lobes and jets contain magnetic fields
a. True
b. False
Indicate whether the statement is true or false
True
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The frost line of the solar system was located approximately between
A) the Sun and the present-day orbit of Mercury. B) the present-day orbits of Mercury and Venus. C) the present-day orbits of Mars and Jupiter. D) the present-day orbits of Venus and Earth. E) the present-day orbits of Uranus and Neptune.
What could explain the darker appearance of moons and rings in the outer solar system?
A) They shine by the diminished light at that great distance from the Sun. B) They are made of small, sooty particles and radiation darkening with loss of volatile bright ices. C) They are composed of basaltic eject from the volcanism on Ariel and Triton. D) They are made of water ice that reflects light much more poorly at the very low temperatures of these moons. E) They are composed of mostly rocky material, like S type asteroids.
How does Newton's Universal Law of Gravitation explain Kepler's laws?
A) Universal gravitation implies that the orbits of the planets must be elliptical (Kepler's first law). B) Universal gravitation implies that the planets will sweep out equal areas in equal times (Kepler's second law). C) Universal gravitation implies that the planets further from the Sun will move more slowly than the planets closer to the Sun (Kepler's third law). D) Universal gravitation implies that when a planet is closer to the Sun in its orbit, it will move faster than when it is farther from the Sun (Kepler's second law). E) Both C and D are correct.
A 10-cm focal length converging lens is used to magnify small newspaper print 2.0 mm high. Calculate the height of the image (in mm) for the maximum magnification for a normal eye
a. 3.5 b. 7.0 c. 9.2 d. 12 e. 2.5