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Q. Water flows over a dam at the rate of 550 kg/s and falls vertically 80 m before striking the turbine blades. Compute: (a) speed of the water just before striking the turbine blades (neglect air resistance), and (b) rate at which mechanical energy is transferred to the turbine blades, assuming 60 percent efficiency.
A cosmic-ray proton in interstellar space has an energy of 17.0 MeV and executes a circular orbit having a radius equal to that of Jupiter's orbit around the Sun (7.78 x 10^11 m). What is the magnetic field in that region of space.
At Zion National Park a loud shout produces the echo 3.40 s later from a colourful sandstone cliff. How far away is the cliff.
Find out the vertical component of the reaction force
A student throws a water balloon vertically down from the top of a building. The balloon leaves the thrower's hand with the speed of 16 m/s. How fast is it traveling after 2.6 seconds.
A 23.00 kg chair initially at rest on a horizontal floor requires a 364N horizontal force to set it in motion. Once the chair is in motion, a 328N horizontal force keeps it moving at a constant velocity. A 23.00 kg chair initially at rest on a horizo..
A particle of mass m moves next to the x axis. Its position varies with time according to x=(3m/s^3)t^3-(4m/s^2)t^2.
Question on center of gravity Discover speed of each block
It is possible to calculate the maximum possible potential (relative to infinity) in air of a metal sphere of 19 cm radius. First, what is the most charge you can put on this sphere.
A car of mass = 800 travelling at 45.0 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. What is the radius of the turn if = 20.0 (Assume the car continues in unif..
Angular acceleration and angular displacement of the rotor using the equation of motion in rotational dynamics.
A 3.00-m-long, 400 kg steel beam extends horizontally from the point where it has been bolted to framework of a new building under construction. A 74 kg construction worker stands at the far end of the beam.What is the magnitude of the torque abo..
A 78-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches base.
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