A single slit forms a diffraction pattern with monochromatic light. The fourth minimum of the pattern occurs at an angle of 32° from the central maximum. The angle at which the fifth minimum of the pattern occurs is closest to:
A) 41.5°
B) 41.0°
C) 40.5°
D) 42.0°
E) 42.5°
A
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The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
A) 0.191 ms B) 30.5 µs C) 9.71 µs D) 95.8 µs E) 15.3 µs
Sedimentary rocks subjected to melting become
A) lithified. B) metamorphic rocks. C) igneous rocks. D) limestone.
A rod with a diameter of 3.00 mm, projects 2.0 cm horizontally outward from a wall. A 50.0 N weight is hung from the end of the rod and the rod deflects downward by 
The shear strain of the rod is
A. 
B. 
C. 
D. 
E. 
The observed relationship between the masses of central black holes and the bulge masses of galaxies implies that
A) galaxy formation and supermassive black hole formation must be related. B) the black hole will eventually suck in the rest of the galaxy. C) the biggest galaxies have the most luminous quasars. D) quasars were more common 10 billion years ago than they are today.