Leonardo da Vinci's Mona Lisa is 21 inches wide and 30.25 inches tall. What is the area of the painting in square centimeters?
A) 4,100 square cm
B) 1,600 square cm
C) 660 square cm
D) 3,300 square cm
E) 2,400 square cm
A
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If a negatively charged particle is placed at point B in the figure below and given a very small kick to the right, what will its subsequent motion be? It will
A plane truss composed of two steel pipes (E 5 210 GPa, d 5 100 mm, and wall thickness 5 6.5 mm) is subjected to vertical load W at joint B. Joints A and C are L 5 7 m apart. The critical value of load W for buckling in the plane of the truss is nearly:
(A) 138 kN
(B) 146 kN
(C) 153 kN
(D) 164 kN
If the movable mirror in a Michelson interferometer is moved 120 microns, how many fringes would be counted for 600 nm light?
A) 200 B) 720 C) 100 D) 300 E) 400
When a cool gas is placed between a glowing wire filament source and a diffraction grating, the resultant spectrum from the grating is which one of the following?
a. line emission c. line absorption b. continuous d. monochromatic