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A 250 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.5 N/cm (see the figure). The block becomes attached to the spring and compresses the spring 17 cm before momentarily stopping. While the spring is being compressed, what work is done on the block by
(a) the gravitational force on it and
(b) the spring force?
(c) What is the speed of the block just before it hits the spring? (Assume that friction is negligible.)
(d) If the speed at impact is doubled, what is the maximum compression of the spring?
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
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A uniform rod of mass M and length L is sitting on a frictionless table. Describe the subsequent motion of the rod
A mass attached to a spring stretches 2.5 cm from equallibrium. What is the angular frequency of the oscillation
8g of helium at an initial temperature of 280Kinteracts thermally with 7.0g of oxygen at an initial temperature of 550K What is the final thermal energy of each gas
A 1.6-rm MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
The client also says that he does not remember any Section 1231 net losses on the prior-year returns. Illustrate what should Harold do? Why?
While visiting Planet Physics, you toss a rock straight up at 14m/s and catch it 2.5s later. determine the mass of Planet Physics
Sheena can row a boat at 2.97 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.67 mi/h. How long does it take her to cross the river
You are testing a new amusement park roller coaster with an empty car with mass 123 kg. One part of the track is a vertical loop with radius 11.1 m, how much work is done by the friction
Find out the magnitude and direction of the displacement
The valuable coefficient of kinetic friction
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