Two thin lenses with 6.80-cm focal lengths at are mounted at opposite ends of a 18.8-cm long tube. An object is located 20.4 cm from one end of the tube. How far from the opposite end is the final image?
a. 8.88 cm
b. 32.5 cm
c. 4.54 cm
d. 8.60 cm
e. 20.4 cm
b
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Venus may have started with an ocean's worth of water. Where is its water now?
A) The original water remains vaporized in the atmosphere due to Venus's intense heat. B) Most of the water is frozen beneath the surface. C) Most of the water combined with rocks in chemical reactions. D) The water was lost when ultraviolet light broke apart water molecules and the hydrogen escaped to space. E) The water changed to carbon dioxide through chemical reactions.
Directly opposite the Tharsis uplift and volcanoes on Mars lies the deep ________, perhaps suggesting impact cause and volcanic effect
Fill in the blank(s) with correct word
During the approach of a severe thunderstorm, workers on a project see lightning and then hear the resulting thunder 5.0 s later. How far away, in kilometers, is the storm?
Saturn's rings are
a. composed of ice particles. b. in the plane of the planet's equator. c. within the planet's Roche limit. d. composed of ice particles, in the plane of the planet's equator, and are within the planet's Roche limit. e. None of the other choices are correct.