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A vessel contains oil of density 8.00 X 102 kg/m3 resting on top of mercury of density 13.6 X 103 kg/m3. A solid, homogeneous sphere floats with half its volume immersed in the mercury and the other half in the oil. What is the density of the sphere?
A potter's wheel moves uniformly from rest to an angular speed of 0.19 rev/s in 34.0 s. Find its angular acceleration in radians per second
An ambulance is generating a siren sound at a frequency of 2,400 Hz. The velocity of sound is 345.0 m/s. find the frequency of the siren perceived by the observer
a person fishing from a pier observes thatsevenwave crests pass by in 6.2s and estimates the distance between two
A bullet with mass 12.5 g and speed 94.9 m/s is fired into a wooden block with a mass of 113 g which is initially at rest on a horizontal surface. What is the speed of the block-bullet system immediately after collision
The planet Saturn has a mass 95.2 times that of the earth anda radius 9.47 times that of the earth. Find the escape velocity for objects on the surface of Saturn
What is the initial energy in the inductor? How long will it take the current to decline to 5.00% of its initial value? Calculate the average power dissipated, and compare it with the initial power dissipated by the resistor.
A whale swims due east for a distance of 6.9 km, turns around and goes due west for 1.8 km, and finally turns around again and heads 3.7 km due east. What is the total distance traveled with the whale? What are the direction and magnitude of the disp..
X-rays of wavelength 0.0963nm are directed at an unknowncrystal. What is the spacing between the crystal planes
An object in equilibrimhas three forces exerted on it. A 33N force acts at 90 degrees and a 44N force acts at 60 degrees. What is the magnitude and direction of the third force?
A piece of copper with initial temperature of 400F and mass 5lbm is dropped into a bucket of water with initial temperature 70F and mass 10lbm. What is the final temperature of the water
A 0.25kg ball moving in a circle at the end of a string has a cantripetal acceleration of 4 m/s^. What is the magnitude of the centripetal force
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
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