As the ball is going downwards, the velocity points __________ and the acceleration points __________
Fill in the blank(s) with correct word
down, down
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Which of the following methods uses the principle of orbital acceleration to detect planets around another star?
A) measuring a single Doppler shift of a star, one time B) measuring change in the Doppler shifts of a star over the course of many nights C) taking a picture of the planet next to the star D) measuring the change of light of a star as the planet crosses in front of it
A taxicab moves five blocks due north, five blocks due east, and another three blocks due north. Assume all blocks are of equal size. How far is the taxi from its starting point?
a. 13 blocks b. 9.4 blocks c. 9.2 blocks d. 8.6 blocks
Snell's Law: Light enters glass from air. The angle of refraction will be
A. greater than the angle of incidence. B. equal to the angle of incidence. C. less than the angle of incidence.
A rod (length = 10 cm) moves on two horizontal frictionless conducting rails, as shown. The magnetic field in the region is directed perpendicularly to the plane of the rails and is uniform and constant. If a constant force of 0.60 N moves the bar at a constant velocity of 2.0 m/s, what is the current through the 12-? load resistor?
A. 0.32 A B. 0.34 A C. 0.37 A D. 0.39 A E. 0.43 A