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A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of ? = 55.0° to the positive x axis (Fig. 8.11).
(a) Determine the speed of the 0.300 kg puck after the collision.
(b) Find the fraction of kinetic energy lost in the collision.
The string will break if its tension exceeds 50-{rm N}. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Find out the maximum speed the stone can attain without breaking the string.
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The mean distance between the earth and the sun is 1.5x1011m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming that the sun emits radiation uniformly in all directions, determine the total ..
You throw a 5-kg ball from a platform (releasing the ball at a height of 5 m) with a speed, 10 m/s, at an angle of 30° with respect to the horizontal. Find the total speed of the ball when it hits the ground
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Two converging lenses, one with f = 4.5cm and the other with f = 44 cm, are made into a telescope. Assume these lenses are now combined to make a microscope; if the magnification needs to be 25 X, how long would the microscope be?
The hare waits for a while after the tortoise passes and then runs toward the finish line again at 7.45 m/s. Both the hare and the tortoise cross the finish line at the exact same instant.
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. what is the temperature of the outer surface of the clothes
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