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Water flows over a section of Niagara Falls at the rate of 1.4 x 106 kg/s and falls 53.0 meters. Compute how much power is generated by the falling water? It asks for power in watts.
A weightlifter bench-presses a 170.0 kg barbell from his chest to a height equal the length of his arms 0.750 m. What is the potential energy of the barbell relative to the weightlifter\'s chest after he lifts the barbell
An electromagnet is made by inserting a soft iron core into a solenoid. The solenoid has 1800 turns, radius 2.0 cm, and length 25 cm. What is the relative permeability KB of the iron core
question1a space platform in form of a thin circular disc of radius a and mass m flying saucer is initially rotating
how long would it take a car to return to its starting place if it traveled 180 ms average speed of 90 kmhr and
A car of mass m moving at speed v1 collides and couples with the back of a truck of mass 2 m moving initially in the similar direction as the car at a lower speed v2.
Some sliding rocks approach the base of a hill with a speed of 18.0m/s . The hill rises at 40.0? above the horizontal and has coefficients of kinetic and static friction of 0.390 and 0.650, Find the acceleration of the rocks
The First Law of Thermodynamics is essentially a statement of conservation of energy. It involves changes in internal energy, the heat flowing into the system and the work done by the system. When heat flows into the system, the internal energy of..
Two point charges are fixed to rectangular coordinate system, Charges of q1 = 3.5uC and q2 = -15 uChave coordinates (0.55,0) and (0,0) in meters respectively
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
When a high-power laser is used in the Earth's atmosphere, At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 6.56 mm
The parallel metal plate of a capacitor is separated by a distance of 0.5cm and is connected to a 90v battery. Discover an electric field between them and the surface charge density .
a 8.9 microm thick fine metal foil separates one end of two pieces of optically flat glass. when a monochromatic light
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