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A wood- sphere of radius 10 cm has a core of lead, also in the shape of a sphere. the wood sphere, when placed in water, floats with only 10% of its volume above the water line. the density of water is 1000 kg/m^3 wood is 676kg/m density of lead is 11,340.... what is the magnitude of buoyancy force ? what is the total mass of sphere? what is the mass of wood and lead portions ? what is the radius of lead core?
Two identical spheres each carry a charge of = - 40.0 µC. The spheres are separated by a distance of 1.00 m. what is the electric force between the spheres
A motorist suddenly notices a stalled car and slams on the brakes, negatively accelerating at 6.2. How fast was the motorist going when the brakes were first applied
A 54-kg skater initially at rest throws a 3.0-kg medicine ball horizontally to the left. Determine the acceleration of the ball during the throw
A series RLC circuit contains a 125.0 O resistor, a 35.0 µF capacitor and a 70.0 mH inductor. What is the peak voltage across the capacitor
Using Heisenberg Uncertainty Principle, estimate fastest possible decay lifetime for a nuclear decay with an energy scale 1MeV
A cylinder of radius 25 cm is filled with an ideal fluid, If the height of the two cylinders is exactly the same, what mass should be placed on the second cylinder to balanced the system
Suppose that, because of an aneurism, the cross-sectional area, A(1), of a normal portion of a blood vessel increases to a value A(2) = 1.7A(1).
A 60 power telescope has an eyepiece with a focal length of 10 cm. find the objective focal length
A battery of internal resistance r = 0.2 ohms and emf = 12.0 V is connected to a device with resistance R = 6.0 ohms. What is the rate of heat generated in the battery
What is the result of mixing 80g of ice at -20 degrees Celsius, into a 200g of water at 20 degrees Celsius? What fraction of the ice cube melts
What fraction of ice is submerged when it floats in freshwater, given the density of water at a temperature of 0 degrees celcius is very close to 1000 kilograms/meter cubed
A fire helicopter carries a 520-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, Determine the force exerted by air resistance on the bucket
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