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A coal-fired electric power plant has a 2,000-megawatt electric power output and operates with an overall plant efficiency of 33%. This means energy is being derived from coal at a rate of 6,000 megajoules per second. At what rate (in tons/day) must coal with a heat content of 10,000 Btu per pound be burned per day to supply the 1000-MW output.
A wheeled cart with a mass of 0.50 kg is rolling along a horizontal track at a constant velocity of 2.0 m/s when it experiences an elastic collision with a second identical cart that is initially at rest, What is each card doing after the second co..
A 35kg child slides down a playground slide at aconstant speed, The slide has a height of 4.0mand is 7.4m long, find the magnitude of the kinetic friction force acting on the child
tarzan who weighs 820 n swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. Over what distance must the lens be movable
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g%u2019s. what is the maximum allowed braking force
an underground pipe carries culinary water to a home at a volume flow rate of 5 galmin. determine the flow rate in
A five-sided object, whose dimensions are shown in the drawing, is placed in a uniform magnetic field. Determine the magnetic flux through the slanted side
A car slows down with an acceleration that has a magnitude of 3.5 m/s2, What was the car's initial velocity
A stainless steel flask with volume 10 liters is filled with 1.4 moles of helium gas at 27 C. What is the average RMS speed of the helium atoms now
a 30.0-kg packing case is initially at rest on the floor of a 1500-kg pickup truck. the coefficient of static friction
A 160 kg horizontal beam is supported at each end. A 300 kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports
On a winter day when the temperature is 4.00, the resistance of the carbon resistor is 217.4. Evaluate what is the temperature on a spring day when the resistance is 215.8
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