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There has long been an interest in using the vast quantities of thermal energy in the oceans to run heat engines. A heat engine needs a temperaturedifference, a hot side and a cold side. Conveniently, the ocean surface waters are warmer than the deep ocean waters. Suppose you build a floating power plant in the tropics where the surface water temperature is ? 35.0 ?C. This would be the hot reservoir of the engine. For the cold reservoir, water would be pumped up from the ocean bottom where it is always ? 6.00 ?C.
What is the maximum possible efficiency of such a power plant?
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.72 x 10^-6 T. What is the intensity S of the wave
A 2 kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 4.60sin (2pi*t), where F is in newtons and t is in seconds. The force constant of the spring is 20.0 N/m.
A wheel initially rotating at an angular speed of 2.4 rad/s turns through 30 revolutions during the time, How long did the acceleration last
Determine the time it takes for the particle. A particle is traveling in a straight line at a constant speed of 28m/s. Suddenly, a constant force of 15.6N acts on it, bringing it to a stop in a distance of 66.8m.
A projectile is fired from ground at an angle 60 degrees above horizontal to hit a target on the wall, which is 25.0 m away. Find the initial speed of the projectile
A charge -318e is uniformly distributed along a circular arc of radius 7.00 cm, which subtends an angle of 49o, What is the linear charge density along the arc
When a pulse is amplified in a linear amplifier, the charge carrier transmit time can cause.
A small 0.280-kg object moves on a frictionless horizontal table in a circular path of radius 4.30 m. The angular speed is 8.02 rad/s.what is the radius of the smallest possible circle on which the object can move
Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
A 0.504 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 290 kg) that is also at rest. Determine the velocity of the second log if the lumberjack comes to rest on it
Light is refracted through diamond from air. If the angle of incidence is 30 °, what is the speed of light in diamond
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