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An alpha particle from a radioactive source is directed into a cloud chamber in a uniform magnetic field of 0.80T. If its path is curved with radius 0.40 meter, find what are its momentum and energy?
A hot-air balloon plus cargo has a mass of 1740kg and a volume of 11730m3. What is the density of the hot air in the balloon
A certain camera lens has a focal length of 149 mm. Its position can be adjusted to produce images when the lens is between 152 mm, Over what range of object distances is the lens useful
The frequncy doubled output of a laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz, how many photons does the laser emit at 532 nm in 3 minutes
A 39.0-kg child swings in a swing supported by two chains, each 3.10 m long, Find the force exerted by the seat on the child at the lowest point
An electron is projected with an initial speed 1.00×106 into the uniform field between the parallel plates. Suppose that field between the plates is uniform and fixed vertically downward, and that field outside the plates is zero. The electron enters..
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.311 mH and the capacitor has a value of 16.4 pF. Calculate the frequency of the radio station.?
What force does a 55 kg passenger exert on the seat when she is at the top of the Ferris wheel.
The other string is plucked in a different location, primarily exciting the 5th harmonic. The resulting sounds give rise to a beat frequency of 342 Hz. What is the wave propagation speed on the guitar strings?
A car of mass M = 800kg travelling at 50km/hour enters a banked turn covered with ice. The road is banked at an angle 20degrees, and there is no friction between the road and the car's tires.
A parallel-plate capacitor with plates of area 2.15 x 10-4m2 is being designed to have a capacitance of 1330 pF. What plate separation is required if the spacebetween the plates is filled with air
An x-ray photon of wavelength 0.179 nm collides with an electron initially at rest. Calculate the Compton shift in wavelength
how much work is required to turn an electric dipole 180deg in a uniform electric field of magnitude e 41.0 nc if p
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