Spherical Mirrors: An object is 50 cm from a concave mirror with radius of curvature of magnitude 60 cm. What is the lateral magnification produced by the mirror?
A. +0.40
B. +0.70
C. +1.5
D. -0.70
E. -1.5
Answer: E
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Which of the following has the greatest number of significant figures?
A) 03.1400 B) 314.1 C) 3.142 D) 000.3140 E) 0.003142
Rotational Dynamics: A uniform solid cylinder of mass 10 kg can rotate about a frictionless axle through its center O, as shown in the cross-sectional view in the figure. A rope wrapped around the outer radius R1 = 1.0 m exerts a force of magnitude F1 = 5.0 N to the right. A second rope wrapped around another section of radius R2 = 0.50 m exerts a force of magnitude F2 = 6.0 N downward. What is the angular acceleration of the cylinder?
A. 1.0 rad/s2 B. 0.60 rad/s2 C. 0.40 rad/s2 D. 0.80 rad/s2
Pangaea is believed to have broken up about how many years ago?
a. 2000 million b. 2 million c. 20 million d. 200 million
A system of 3 masses is located as follows: m1 = m0 at (0, L), m2 = 2m0 at the origin, and m3 = 3m0 at (3L, 0). Where is the center of mass of these masses
A. L/6, 3L/2 B. 5L/6, 3L/2 C. 2L/13, 5L/6 D. 3L/2, L/6