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For a coal gasification project being planned, 26,000 tons of coal per day is used to produce 250,000,000 cubic feet per day of natural gas. If the coal is rated at 8700 Btu/lb and the gas at 950 Btu/cubic ft, what will be the efficiency of this plant?
A conductor bar ab of length 0.6 m is moving on two conducting rails with a speed v = 3.6 m/s perpendicular to a uniform magnetic field of B = 0.35 T. find the electromotive force in the bar
A person jumps from the roof of a house 3.6-m high. When he strikes the ground below, Find his velocity just before his feet strike the ground
A 120g ball moving at 0.50 m/s in the + x direction is subject to a 0.25 N force in the - y direction for 2.5 s, Find the balls final speed
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
A wedge of air is formed between two glass plates that are 9.0 cm long, with one edge touching, How far apart are the maxima for the reflected light with ? = 665 nm
A screw with 25 threads per centimeter is driven 1.49 cm into its fixture in 12.4 s with a cordless electric screwdriver. What is the average angular speed of the screwdriver
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.56 cm. If the spring constant is 237 N/m and the mass is 0.400 kg; Determine the mechanical energy of the system
The cable of the 1900 kg elevator cab shown the figure snaps when the cab is at rest at the first floor, where the cab bottom is a distance d = 4.7 m above a spring of spring constant k = 0.18 MN/m. Find the speed of the cab just before it hits the..
questionone of ways that a forensic scientist can figure out the make and model of a car from a ldquohit and runrdquo
A certain camera has f-numbers that range from 1.7 to 29. If the focal length of the lens is 57 mm, what is the range of aperture diameters for the camera
question1a small plastic sphere of mass m 137 g is attached to a string.there is an electric field of 174 nc directed
An object of mass b has a speed that changes with distance d according to v = bx^-n. What is the force as a function of d? What is the position as a function of time d(t=0)=d(initial).
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