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A research group plans to construct an engine that extracts energyfrom the ocean, using the fact that the water temperature near thesurface is greater than the temperature in deep water. If thesurface water temperature is 20.0°Cand the deep-water temperature is 14.0°C, what is the maximum efficiency such anengine could have?
A scuba tank has a volume of cm2. For every deep dives, the tank is filled with (by volume) pure oxygen and 50% pure helium. What is the ratio of the rms speeds of the two types of molecules
the electric field between two charged plates is approximately constant. this means that a charged particle between two
What is torque exerted by the fish about an axis
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3. What is the winding density n of the solenoid
when we use the digital multi-meter dmm to measure the resistance a current is sent through the component we are trying
How much work does a steam crane need to do in order to lift a 108,500 kg locomotive back onto the track if the locomotive has been derailed into a ditch 3.25 meters below the level of the tracks
a 0.005 kg. bullet is fired at 300 ms east into a 10 kg. block of wood at rest. if the bullet sticks into the wood what
A block of mass m = 3.20 kg is pushed a distance d = 6.40 m along a frictionless, Determine the work done by the net force on the block
an object is formed by attaching a uniform thin rod with a mass of mr 6.69 kg and length l 5.44 m to a uniform sphere
A hot-air balloon has just lifted off and is rising at the constant rate of 2.4m/s. how high is she when the camera reaches her
A solid wood door 1.00 m wide and 2.00 m high is hinged alongone side and has a total mass 40.0 kg. Find the final angular speed of the door
A ball of clay weighing 0.5 kg is thrown at a pendulum bob at rest weighing 4-kg. What is the velocity of the pendulum bob
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