Around us in the galactic plane, we find stars of a variety of ages and compositions
Indicate whether the statement is true or false
TRUE
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A beam of monochromatic light goes from material 1 with index of refraction n1 into material 2 with index of refraction n2 . The frequency of light in material 1 is f1 and in material 2 is f2 . What is the ratio of f1/f2?
a. n1/n2 b. n2/n1 c. 1 d. The values of n1 and n2 must be known to find the answer.
Two small cylindrical plastic containers with flat bottoms are placed on a turntable that has a smooth flat surface. Canister A is empty; canister B contains lead shot. Each canister is the same distance r from the center. The coefficient of static friction between the canisters and the turntable is ms. When the speed of the turntable is gradually increased,
a. only the lighter container slides outward off the turntable; the heavier one stays on. b. only the heavier container slides outward off the turntable; the lighter one stays on. c. both containers slide off the turntable at the same turntable speed. d. the lighter container slides inward. e. the heavier container slides inward.
Materials that have a large magnetic susceptibility and are insulators are _________.
Fill in the blank(s) with the appropriate word(s).
The Universe consists of the Sun, its family of planets, and some smaller bodies such as moons, asteroids, and comets
a. True b. False Indicate whether the statement is true or false