When the parallax angle of a star is measured to be 0.002", the distance to the star is ________ light-years
Fill in the blank(s) with correct word
1600
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Equation of Traveling Waves: Find the speed of an ocean wave whose displacement is given by the equation y = 3.7 cos(2.2x - 5.6t) where x and y are in meters and t is in seconds.
A. 2.5 m/s B. 1.9 m/s C. 3.5 m/s D. 4.5 m/s
If the rock particles in a sedimentary rock are relatively small with well sorted and well rounded grains, we can infer that the sediment grains traveled a
A) short distance. B) long distance for a long time. C) long distance in a short time. D) short distance for a long time.
Length Contraction: A really high-speed train moves in a direction parallel to its length with a speed that approaches the speed of light. The height of the train, as measured by a stationary observer on the ground,
A. approaches infinity. B. approaches zero. C. increases slightly. D. decreases slightly. E. does not change due to the motion.
If an electron acquires more than the ionization energy, the electron will return to the ground state
a. True b. False Indicate whether the statement is true or false