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A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.700m^3 and the tension in the cord is 800N .
Part A Calculate the buoyant force exerted by the water on the sphere.
Part B What is the mass of the sphere?
Part C The cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
A 56-kg student runs at 4.2m/s , grabs a hanging 10.0-m-long rope, and swings out over a lake. He releases the rope when his velocity is zero. What is the angle when he releases the rope
A solenoid of length 4.48 cm and diameter 0.785 cm is wound with 160 turns per cm. what is the induced emf in one of the windings
A proton is at the origin and an electron is at the point = 0.45 , = 0.31 . Find the electric force on the proton.
A cube of side 9.50cm is placed in a uniform field E=7.50×103 N/C with edges parallel to the field lines, What is the net flux through the cube, What is the flux throught the rigt face
One component of a metal sculpture consists of a solid cube with an edge of length 0.211 m. Find the cube\'s mass
The New England Merchants Bank Building in Boston is 152 m high, What is the total distance, side to side, that the top of the building moves during such an oscillation
A beam of unpolarized light shines on a stack of five ideal polarizers, Find the angle between the axes of each pair of adjacent polarizers
A penguin slides at a constant velocity of 1.4 m/s down an icy incline, How much time is required for the penguin to slide to a halt after entering the horizontal patch of ice
A step-down transformer has 16,000 turns on the primary and 95 turns on the secondary. If the rms emf across the secondary coil is 120 V, Elucidate the maximum emf across the primary coil?
a film of index of refraction of 1.4 and thickness of 1.2*10^-5 m is on a lens with an index of refraction of 1.6. find the path length difference between the two reflected rays
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
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