An object is placed near a concave mirror having a radius of curvature of magnitude 60 cm. How far should you place the object from the mirror so that the lateral magnification produced by the mirror will be +2.5?
A) 18 cm
B) 24 cm
C) 30 cm
D) 36 cm
E) 42 cm
A
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According to the following figure, as you increase in altitude in Earth's lower atmosphere, the atmospheric pressure ________ dramatically at a(n) _________ rate.
a. increases; increasing b. increases; decreasing c. decreases; decreasing d. decreases; increasing e. decreases; constant
A ball, of mass 100. g, is dropped from a height of 12. m. Its momentum when it strikes the ground is
A) 1.5 kg?m/s. B) 4.8 kg?m/s. C) 3.3 kg?m/s. D) 2.4 kg?m/s. E) 1.8 kg?m/s.
Refer to Figure 6-13. Block A has a mass of 3.00 kg, block B has a mass of 5.00 kg and block C has a mass of 2.00 kg. The pulleys are ideal and there is no friction between block B and the table. What is the acceleration of the masses?
A. 4.20 m/s2 B. 4.71 m/s2 C. 1.86 m/s2 D. 2.94 m/s2 E. 0.981 m/s2
A string is stretched and fixed at both ends, 200 cm apart. If the density of the string is 0.015 g/cm, and its tension is 600 N, what is the fundamental frequency?
a. 316 Hz b. 632 Hz c. 158 Hz d. 215 Hz e. 79 Hz