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Hydroelectric power plants convert gravitational potential energy into more useful forms with flowing water downhill during a turbine system to generate electric energy. The Hoover Dam on the Colorado River is 211 m high and generates 4.00 x109 kW · h/y. At what rate should water bellowing during the turbines to generate this power? The density of water is 1.00 kg/L. Suppose a total efficiency of 97.5 percent in converting the water's potential energy into electrical energy.
a single slit forms a diffraction pattern with the first minimum at an angle of 40 deg from central maximum.
A 2.5 kg object is attached to a horizontal spring of force constant k = 4.1 kN/m. The spring is stretched 10 cm from equilibrium and released. Find the maximum acceleration
In order to manufacture these coffee tables, the company would need to incur $525,000 in fixed costs for new equipment. Calculate the break-even point of the coffee tables in units sold. Illustrate what would be the total revenue at the break-even po..
A step-down transformer produces a voltage of 6.0V across the secondary coil when the voltage across the primary coil is 140V, What voltage appears across the primary coil of this transformer
A hockey puck is sliding across a frozen pond with an initial speedof 8.1 m/s. It comes to rest after sliding adistance of 17.0 m. What is the coefficient of kinetic friction between the puck and the ice?
A microwave antenna with a mass of 100 kilogram sits atop a tower that is 40 meter tall. Determine the antenna's potential energy
a 2 mev gamma-ray photon is incident on a detector undergoes two sequential compton scatterings and then escapes. if
A rectangular billboard in space has the dimensions 10 meters by 20 meters. How fast and in what direction with respect to the billboard would a space traveler have to pass for the billboard to appear square?
Calculate the inductance (SI units: Henries) of a coil of wire having a loop diameter of 0.5 cm and length of 1 cm. The wire has 1000 loops per meter
you are driving toward a traffic signal when it turns yellow. your speed is the legal speed limit of v0 55kmh your
liquid water at 20 degrees c has a constant pressure mass specific heat of cp4181.8. suppose that 1kg of liquid water
A 6kg block, starting at rest, is pulled up a ramp by a motor coiling a rope such that the tension is 60N. How much energy is supplied by the motor to move the block up the ramp
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