Conservation of Momentum: A 60-kg swimmer suddenly dives horizontally from a 150-kg raft with a speed of 1.5 m/s. The raft is initially at rest. What is the speed of the raft immediately after the diver jumps if the water has negligible effect on the raft?
Fill in the blank(s) with the appropriate word(s).
0.60 m/s
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General Questions: A girl attaches a rock to a string, which she then swings counter-clockwise in a horizontal circle. The string breaks at point P in the figure, which shows a bird's-eye view (as seen from above). Which path (A-E) will the rock follow?
A. Path A B. Path B C. Path C D. Path D E. Path E
One horsepower is equal to
A) 550. watts. B) 746. watts. C) 746. J. D) 550. J. E) 550. kW-h.
A polarizer is oriented at an angle ? to the vertical. If the vertically polarized beam of light of intensity 200 W/m2 passes through the polarizer, what is the transmitted intensity of light for an angle of 20.0°?
A) 35.0 W/m2 B) 44.4 W/m2 C) 177 W/m2 D) 23.0 W/m2 E) 200 W/m2
The initial prediction by Percival Lowell of Pluto's position was close to the place it was, in fact, found by Clyde Tombaugh in 1930
Indicate whether the statement is true or false