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A tungsten target is struck by electrons that have been accelerated from rest through a 29.9-kV potential difference. Find the shortest wavelength of the radiation emitted.
__________ nm
A variable-speed drill, initially turning at 300 rpm, speeds up to 1300 rpm in a time interval of 0.3 s
A point charge with a charge q1 = 2.60?C is held stationary at the origin. How much work is done by the electric force on q2
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. [Delayed Feedback] 1) Which ball hits the ground first?
A length of aluminum wire has a resistance of 16.0 ? at 28.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, find the temperature of the oven
In the Bohr model of the hydrogen atom, an electron in the 3rd excited state moves at a speed of 2.43 105 m/s, What is the effective current associated with this orbiting electron
A curve of radius 53.8 m is banked so that a car of mass 2.5 Mg traveling with uniform speed 56 km/hr can round the curve without relying on friction to keep it from slipping on the surface
The plates of a parallel-plate capacitor are 3.50mmapart, and each carries a charge of magnitude 75.0nC, What is the area of each plate
A block of mass 3.0 kg moves along a frictionless track which has a dip 0.7 m below the original level of the track and then a plateau 1.0 m above the original level of the track. What is the velocity at the hight point
An object is so = 2 m from the front side of a converging lens with focal length f1 = 1 m, Draw a ray diagram of the situation, Where is the final image now, What is the new magnification
A 0.30 m 0.30 m 0.10 m block is suspended from a wire and is completely under water. What buoyant force acts on the block
A 17.0 m-long copper wire, 2.10 mm in diameter including insulation, is tightly wrapped in a single layer with adjacent coils touching, What is the length of the solenoid
A telescope has an objective with a refractive power of 1.50 diopters and an eyepiece with a refractive power of 270 diopters
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