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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?
A 11.1-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10.3 m/s, determine the following. (a) the translational kinetic energy of its center of gravity ____J (b) the rotational kinetic en..
A violinist is tuning her instrument to concert A (440 Hz ). She plays the note while listening to an electronically generated tone of exactly that frequency, What was the frequency of her violin when she heard the 4.00 beat
Consider an RLC circuit with R = 150? , L = 597mH , and C = 0.260?F, At what frequency is this circuit in resonance
A small conductive rod of length 1.7 m moves with a constant velocity v=16 m/s in a direction parallel to a long wire carrying a current of 34 A. The the axis of the rod is perpendicular to the direction of the wire and the distance between the wire ..
What is the charge on each
A material has an index of refraction of 2.050. What is the critical angle for internal reflection inside a block
Consider the equation for heat transfer through a wall. Based on this, describe two simple ways you could modify your home to decrease the rate at which heat is lost through your walls.
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 302 K and the refrigerator is kept at a temperature of 276 K. find the coefficient of performance of this refrigerator
A seasoned mini golfer is trying to make par on a tricky hole #5. The golfer can complete the hole by hitting the ball from the flat section it lays on, at what speed must the golfer hit the ball to land the ball in the hole
A charge +Q0 is distributed uniformly througout a non- conductiong sphere of radius R0 the sphere also has a point charge -q0 at its center. a) what is the electric field outside of the sphere at a distance r from the sphere center? b) what is the el..
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. compute the index of refraction for violet light in plastic
Two adjacent natural frequencies of an organ pipe are determined to be 299 Hz and 345 Hz. (Suppose the speed of sound is 343 m/s.)
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