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a 10.0 kg watermelon and a 7.00 kg pumpkin are attached to each other via a cord that wraps over a pulley. Friction is negligible everywhere in the system.
a) find the accelerations of the pumpkin and the watermelon. Specify magnitude and direction.
b) if the system is released from the rest, how far along the incline will the pumpkin travel is 0.30 s ?
c) what is the speed of the watermelon after 0.20s.
A 0.800-kg block oscillates on the end of a spring whose spring constant is k = 42.0 N/m. What is the fractional decrease in amplitude per cycle
An explorer in the dense jungles of equatorial Africa leaves his hut. He takes 38 steps at an angle 45 degrees north of east, What is the direction of the displacement that will return the explorer to his hut
Young's double-slit experiment is performed with 587-nm light and a distance of 2.00 m between the slits, Determine the spacing of the slits
A runner covers one lap of a circular track 40.0m in diameter in 63.5s a) average speed for that lap? b) average velocity for that lap? c) If she covered the first half-lap in 28.6s , what was her average speed for that half-lap?
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 50.5 cm, what is the pipe\'s diameter at the refinery
A 9 g ice cube at -10°C is placed in a lake whose temperature is 17°C. Calculate the change in entropy of the cube-lake system
A standard deck of cards contains 52 different cards. A poker hand consists of five cards, chose randomly. How many different poker hands are there
A copper rod of length 0.78 m is lying on a frictionless table (see the drawing). What must be the direction of the current in the copper rod
Two cars collide at an intersection. Car A with a mass of 1800kg, is going from west to east, while car B of mass 1400kg, How fast was car A going just before the collision
A person starts from rest at the top of a large frictionless spherical surface, and slides into the water below. at what angle does the person leave the surface
How long after the arrow was shot must the apple be dropped, in order for the arrow to pierce the apple as the arrow hits the tree.
q1. an archer shoots an arrow with a velocity of 45.0ms at an angel of 50.0 with the horizontal. an assistant standing
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