A coin is 12 cm in front of a converging lens with focal length of magnitude 4.0 cm. Where is the image?
A) 6.0 cm in front of the lens B) 6.0 cm behind the lens
C) 8.0 cm behind the lens D) 4.0 cm in front of the lens
B
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The magnitudes of two vectors Va and Vb are 5 and 7, respectively, and the magnitude of their sum Vs is 10 (i.e., |Va| = 5, |Vb| = 7, |Vs | = 10). The angles ? and ? in the figure below are:
(A) ? = 40.5°, ? = 27.7°
(B) ? = 27.5°, ? = 40.7°
(C) ? = 48.5°, ? = 37.7°
(D) ? = 14.5°, ? = 17.3°
What is the Kuiper belt?
A. a halo of light seen around some bright comets B. a region beyond Neptune in which a large number of small icy objects orbit C. streaks seen in the tails of some comets D. a prize given to the person who discovers the most asteroids in a given year E. a ring around Jupiter in which comets are captured
A compact heat exchanger is proposed to heat tomato juice. The heat exchanger is to be constructed with finned tubes as shown in Figure 9-30, spacing C. The properties of the
An index of refraction less than one for a medium would imply
A) that the speed of light in the medium is the same as the speed of light in vacuum. B) that the speed of light in the medium is greater than the speed of light in vacuum. C) that the speed of light in the medium is less than the speed of light in vacuum. D) refraction is not possible. E) reflection is not possible.