Amber is fossilized
a. bone.
b. tree resin.
c. shell.
d. plant.
b
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In comparing the Terrestrial worlds, which planet is most similar to Earth's moon?
a. Mercury b. Venus c. Earth d. Mars e. Uranus
Thin Lenses: A convex lens has focal length f. If an object is placed at a distance between f and 2f from the lens on the principal axis, the image is located at a distance from the lens
A. of 2f. B. between f and 2f. C. of f. D. that is greater than 2f. E. of infinity.
A flat coil of wire consisting of 15 turns, each with an area of 40 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 1.5 T to 5.1 T in 2.0 s. If the coil has a total resistance of 0.20 ?, what is the magnitude of the induced current?
a. 7.65E–1 A b. 5.40E+1 A c. 5.40E–1 A d. 8.64E–2 A e. 2.16E–1 A
Which of the following best describes the greatest known value for index of refraction?
A. 1.732 B. 1.999.... (just shy of 2) C. 2.000... (2 exactly) D. a value greater than 2 but not greater than 3 E. a value greater than 3