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The width of the central bright fringe in a diffraction pattern on a screen is identical when either electrons or violet light (vacuum wavelength =405 nm) pass through a single slit. The distance among the screen and the slit is the same in each case and is large compared to the slit width. How fast are the electrons moving?
Two sqaures of wire like that of above are placed side by side on a table with a distance of 8 cm between the closest sides of the two sqaures, What is the resulting force between the two squares
A 300kg piano slides 4.10 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.4. Determine the force exerted by the man.
A 0.200-kg block along a horizontal track has a speed of 1.80m/s at once before colliding with a light spring of force constant 44.2 N/m located at the end of the track.
An engine absorbs 1.72 kJ from a hot reservoir at 277°C and expels 1.24 kJ to a cold reservoir at 27°C in each cycle. What is the power output of the engine if each cycle lasts 0.303 s
a magnetic field is perpendicular to .04 by .06 m a rectangular coil of wire that has one hundred turns in a time of .05s, Calculate the change in the magnetic field
suppose you adjust your garden hose nozzle for a hard stream of water. you point the nozzle vertically upward at a
A 13 kg dog is standing on the edge of astationary, frictionless turntable of rotational inertia 95kg·m2 and radius 2.05 m.The dog walks once around the turntable. What fraction of a fullcircle does the dog's motion make with respect to the ground?
A spherical capacitor contains a charge of 3.50nC when connected to a potential difference of 220V. Calculate the radius of the inner sphere
The full diameter of a wheel is 99 , and its rotational inertia is 6.1. What is the minimum mass it could have? How could it have more mass
How many protons hit the target. How much energy is delivered to the target each second if the protons each have a kinetic energy of 30 MeV and lose all of their energy in the target.
Water flows over a waterfall 10 meters to a turbine. Water flows at a rate of 10kg/sec. How much power is delivered to the turbine
Calculate the y-component of the magnetic force.
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