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A projectile is launched from a cliff with an initial velocity of 25 m/s at an angle of 30 degrees above the horizontal. The projectile reaches a maximum height at point P and then falls to point Q, which is 65 m below the cliff. What is the distance that it travels?
A block is projected up a frictionless inclined plane with initial speed v0 = 1.44 m/s. The angle of incline is ? = 45.8°. How long does it take to get there
an important radionuclide produced in water-cooled nuclear reactors is 16n which has a half-life of 7.13 s and emits
Three long, straight electrical cables, running north and south, are tightly enclosed in an insulating sheath. One of the cables carries a 21.3 A current southward; the other two carry currents of 17.2 A and 10.8 A northward.
The lens of an endoscope is carefully matched such that the light ray from the edge of the lens enters the fiber at an angle. What focal length should the lens have
with what speed would the arrow leave the bow.
An electron is to be accelerated in a uniform electric field having a strength of 1.60 106 V/m. Find over what distance would it have to be accelerated to increase its energy by 50.0 GeV
if a second capacitor of capacitance 2c is connected in series to the first the time constant of the new rc circuit
A weight (with a mass of 90 kg) is suspended from the point near the right-hand end of a uniform boom with a mass of 71kg. To support the uniform boom a cable runs from this same point to a wall (the left-hand vertical coordinate) and by a pivot on t..
A circular coil of wire has a radius of approximately 5 cm. It contains 200 turns and lies with its plane parallel to a uniform magnetic field 1.4 T. Calculate the torque on the coil if it carries a current of 3.0 A
A horizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. A 1200 kg object is suspended from the end of the rod. Find the vertical deflection of the end of the rod
Carl and Lenny are trying to find Carl's keys that are beeping-he attached a device to beep when you whistle for this purpose, how far is Lenny from the key's
Light wavelenght 590nm fall on a double slit, and the first bright fringe of the interference pattern is seen at an agle of 13 from the central maximum
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