The objective fstronomical telescope have focal lengths of 320 cm and 4.0 cm, respectively
The telescope is used to view Neptune and the final image is set at infinity. The diameter of Neptune is 4.96 × 107 m, and its distance from Earth at the time of observation is 4.4 × 1012 m. What is the angle (in milliradians) subtended by the final telescopic image of Neptune?
A) 1.3 mrad B) 0.90 mrad C) 1.5 mrad D) 1.7 mrad E) 1.1 mrad
B
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In _________cleavage, the material fractures across the crystalline grains on the cleavage planes.
Fill in the blank(s) with the appropriate word(s).
Shield volcanoes, like those on Venus and Mars, occur ____
a. over a hot spot b. along a subduction zone c. Inside a chamber d. along plate boundaries e. within a caldera
What do Viking, Pathfinder, and the two Mars Rovers have in common?
A) They all found proof of life on Mars. B) They all could move over the surface of Mars to examine the rocks. C) They all were designed to investigate Mars' potential for life. D) They all are still transmitting data from Mars to Earth. E) They all proved Mars was too inhospitable for life to have every existed there.
A curved mirror that produces an enlarged image will also have a greater field of view than a plane mirror
a. True b. False Indicate whether the statement is true or false