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A playground carousel is free to rotate about its center onfrictionless bearings, and air resistance is negligible. Thecarousel itself (without riders) has a moment of inertia of130 kg·m2. When oneperson is standing at a distance of 1.50 m from the center, thecarousel has an angular velocity of 0.570rad/s. However, as this person moves inward to a point located0.750 m from the center, the angular velocity increases to0.670 rad/s. What is the person's mass?
A block of mass m = 12.0 kg has a speed v and is behind a block of mass M=40.0 Kg that a speed 0.500 m/s The surface is frictionless . the Block collide and stick together. After the collision, the blocks have a common speed of 0.900 m/s. what was in..
A 103 kg fullback runs at the line of scrimmage. A constant force of 3399 N must be exerted on him to bring him to rest in a distance of 1.2 m in a time interval of 0.27 s. How fast was he running initially
An inexperience novice pilot was taking his brand new Cessna Skyhawk-172R plane for a trip from Tallahassee to Atlanta, which is 375 km due north. What is the speed of the plane in still air
A sphere of radius 6.21 cm and uniform surface charge density, Find the separation between the point charge and the center of the sphere
an 80 kg construction worker sits down 2.0 m from the end of a 1450 kg steel beam to eat his lunch. the cable
An object with a density of 771.0 kg/m3 and a mass of 1435.0 kg is thrown into the ocean. Find the volume that sticks out of the water
A commercial airliner is undergoing its initial ascent while the pilot maintains a cabin environment of T = 23 C, r = 0.35, and p = 880 hPa. At the 670 hPa level an exit door ruptures and cabin pressure rapidly decompresses. Will clouds form in the c..
Suppose two parallel-plate capacitors have the same charge q, but the area of capacitor 1 is A and the area of capacitor 2 is 2A. what is the voltage across capacitor 2?
As a freely falling object picks up downward speed, what happens to the power supplied by the gravitational force? Does it increase, decrease, or stay the same and Why.
The absorber surface of a solar collector is made of aluminum coated with black chrome a s = 0.87 and e ir = 0.09). Solar radiation is incident on the surface at the rate of 600 W/m2. The air and the effective sky temperature are 25 and 15°C respe..
a mass attached to a spring oscillates according to the equation xt 24sin16t 0.50 where x is in cm and t in seconds.
What is the coefficient of kinetic friction between the table and floor.
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