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What is the width of the slit? Parallel light rays with a wavelength of 580 nm fall on a single slit. On a screen 3.00 m away, the distance between the first dark fringes on either side of the central maximum is 4.30 mm .
find the magnetic field at the center of a set of helmholtz coils each with radius r0.1m and each carrying a total
Four identical particles, each with mass m = 10-6 kg and charge Q = 10-6 C, are initially at the four corners of a square with side-length a = 0.01 m. what is the final speed of the released particle once it is very far away
A 0.075-kg arrow is fiered horizontally. The bowstring exertsan arerage force of 65 N on the arrow over a distance of 0.90m. With what speed does the arrow leave the bow
Light with a frequency of 2.77 x 1015 Hz strikes a metal surface and ejects electrons that have a maximum kinetic energy of 7.0 eV. What is the work function (in eV) of the metal?
Light rays traveling through air enters a piece of plexiglass at an angle of 33°. The index of refraction of plexiglass is 1.43. The light than re-enters the air at what angle upon leaving the plexiglass.
a popgun uses an ideal spring for which k=2000N/m. how high can the gun shoot a 5.0gram projectile
a 28000 kg rocket has a rocket motor that generates 309200 n of thrust.what is the rockets initial upward
A galvanometer has a coil resistance of 29.0 ?. It is to be made into a voltmeter with a full-scale deflection equal to 100.0 V, what size resistor should be placed in series with the galvanometer
A current is flowing through a circuit and you open a switch. Why might a spark jump across the switch opening? Explain what is happening? What property of the circuit would be relevant to this phenomenon?
A ray of red light, for which n=1.54 and a ray of violet light, for which n=1.59, travel during a piece of glass. They meet right at the boundary among the glass and the air, and emerge into the air as one ray with an angle of refraction of 22.5?. Wh..
a blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.4 ms2. a
A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s. What is the magnitude of the braking force
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