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A 91.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.79 rad/s. A monkey drops a 9.73-kg bunch of bananas vertically onto the platform. They hit the platform at 4/5 of its radius from the center, adhere to it there, and continue to rotate with it. Then the monkey, with a mass of 20.9 kg, drops vertically to the edge of the platform, grasps it, and continues to rotate with the platform. Find the angular velocity of the platform with its load. Model the platform as a disk of radius 1.67 m.
An inductor has a53.4-?reactance when connected to a60.0-Hzsource. What is the maximum current in the inductor
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
The average speed of a nitrogen molecule in air is about 6.70*10^2 m/s, and its mass is about 4.68*10^-26 kg. What average force does the molecule exert on the wall
a runner of the 100m dash aims to achieve a 10sec time. he accelerates to his final cruising speed in the first 10m. what is his final cruising speed
A 690-kg elevator starts from rest and moves upward for 3.50 s with constant acceleration until it reaches its cruising speed, 1.85 m/s. What is the average power of the elevator motor during this period
Calculate the binding energy of the last neutron in the 4320Ca nucleus. (Hint: You should compare the mass of 4320Ca with the mass of 4220Ca plus the mass of the last neutron. The mass of 4220Ca = 41.958622 u, whereas the mass of 4320Ca = 42.95877..
The total energy of a particle is 3.97 times its rest energy. The mass of the particle is 2.8 × 10^-27 kg. With what speed is the particle moving and what is the particle's momentum
A 4.0 kg mess kit sliding on a frictionless surface explodes into two 2.0 kg parts, one moving at 1.0 m/s, What was the original speed of the mess kit
A cup of water is heated with a heating coil that delivers 27.28W of heat. What is the mass of the water
unpolarized light with an intensity Io=16 W/m2 is incident on a pair of polarizers. what is the intensity of light transmitted through the first and second polarizer
a solid, uniform sphere (r=20 cm, density= 850 kg/m cubed) is attached by a massless cable to the ceiling of a room, find the apparent weight (the reading on the scale) when the cable tension is
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
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