Vision Problems: What power (in diopters) of corrective contact lens is required to correct the vision of a myopic eye whose far point is at 170 cm?
Fill in the blank(s) with the appropriate word(s).
-0.59 diopters
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The "average speed" of a trip by car describes:
a. the speed on the odometer at a given moment. b. a speed that remains the same throughout the whole trip. c. the distance traveled divided by how long it took. d. how long the trip usually takes. e. the speed at which most people drive for the trip.
Does the uncertainty principle affect our ability to follow the path of a baseball? Why or why not?
A) No, because the uncertainties in the position and momentum of the baseball are so small in comparison to its size and total momentum that they are unnoticeable. B) Yes, because we cannot know both where the baseball is and which way it is going at the same time. C) No, because the exclusion principle says that large objects are excluded from the consequences of the uncertainty principle. D) No, because the uncertainty principle applies only to electrons.
Two police cars have identical sirens that produce sound of frequency of 570 Hz. A stationary listener is standing between two cars
One car is parked and the other is approaching the listener and both have their sirens on. The listener measures 9.0 beats per second. Find the speed of the approaching police car. The speed of sound is 340 m/s.
Which of the following played the most important role in the ring's formation?
A) Saturn's differential rotation B) Saturn's Roche limit C) Saturn's distance from the Sun D) debris from volcanoes on Mimas E) tidal resonance with Titan