The index of refraction for a certain material is 1.399 for red light and 1.432 for blue light. Find the angle separating the two refracted colors if the: (a) angle of incidence is 30°. (b) angle of incidence is 60°
What will be an ideal response?
(a) 0.50°
(b) 1.04°
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What will be an ideal response?
A car travels around an unbanked curve at 17 m/s. If the static friction coefficient between the tires and the road is 0.45, what is the minimum radius curve that the car can take at this speed without slipping?
A. 65 m B. 3.9 m C. 15 m D. 8.1 m
What does the Milky Way look like on the night sky?
A. a spiral-shaped region of nebulosity B. a uniform scattering of stars throughout the sky C. a pale band of light scattered with stars that stretches across the sky D. The Milky Way is not visible from Earth without a telescope.
Two identical balls are thrown directly upward, ball A at speed v and ball B at speed 2v, and they feel no air resistance. Which statement about these balls is correct?
A) Ball B will go four times as high as ball A because it had four times the initial kinetic energy. B) Ball B will go twice as high as ball A because it had twice the initial speed. C) The balls will reach the same height because they have the same mass and the same acceleration. D) At their highest point, the acceleration of each ball is instantaneously equal to zero because they stop for an instant. E) At its highest point, ball B will have twice as much gravitational potential energy as ball A because it started out moving twice as fast.