A double convex (convex-convex) thin lens has radii of curvature 46. cm, and is made of glass of index of refraction n = 1.60. What is the focal length?
A) 36. cm
B) infinite
C) 46. cm
D) 18. cm
E) 38 cm
E
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Two flat 4.0 cm × 4.0 cm electrodes carrying equal but opposite charges are spaced 2.0 mm apart with their midpoints opposite each other
Between the electrodes but not near their edges, the electric field strength is 2.5 × 106 N/C. What is the magnitude of the charge on each electrode? (?0 = 8.85 × 10-12 C2/N • m2) A) 35 nC B) 18 nC C) 16 nC D) 30 nC
The planet Jupiter is 7.78 × 1011 m from the sun. How long does it take for Jupiter to orbit once about the sun given that the distance from the earth to the sun is 1.50 × 1011 m?
A) 2.3 years B) 5.2 years C) 6.0 years D) 12 years E) 27 years
On a large scale, we find the universe to have voids and ________ structure
Fill in the blank(s) with correct word
A pendulum makes 12 complete swings in 8.0 s
(a) What is its frequency? (b) What is its period?