When white light disperses as it passes through a prism, which of the following colors moves at the highest speed in the prism?
a. yellow
c. blue
b. red
d. green
B
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A 2000 kg car is traveling on a banked curved icy road. The road is banked at an angle of 12.0 degrees and has a radius of curvature of 500 m. The velocity of the car necessary to travel on the icy road without sliding is
A. 32.3 m/s. B. 40.5 m/s. C. 42.8 m/s. D. 49.5 m/s. E. 50.2 m/s.
Einstein originally added a cosmological constant to his equations to prevent a presumably static universe from either contracting or expanding
Modern cosmologists have reintroduced it to their equations, where as the source of dark energy it causes the universe to expand ever faster. Indicate whether the statement is true or false
Beats: Two motors in a factory are running at slightly different rates. One runs at 825.0 rpm and the other at 786.0 rpm. You hear the sound intensity increase and then decrease periodically due to wave interference. How long does it take between successive instances of the sound intensity increasing?
A. 1.54 s B. 1.43 s C. 1.66 s D. 1.79 s
A car starts from rest and accelerates uniformly at 3 m/s2. A second car starts from rest 6 s later at the same point and accelerates uniformly at 5 m/s2. How long does it take the second car to overtake the first car?
A) 24.0 s B) 12.2 s C) 35.0 s D) 18.9 s E) 22.7 s