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Red light (wavelength = 700nm) is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at 3.9 degrees. What is the width of the slit?
A blacksmith cools a 1.30- chunk of iron, initially at a temperature of 650.0, by trickling 15.6 water over it. How much water did the blacksmith trickle over the iron
An airplane is flying horizontally in a region where the earth's magnetic field is 5.2x10-5 T at an angle 60 deg below the horizontal. what is the potential difference between the wing tips
An electron and a proton are eachaccelerated from rest in a uniform electric field of 2.0 ×105 V/m. What are their kinetic energies inJoules after they have each traveled a distance of 0.20 m in the electric field?
Suppose that charges on a dipole antenna oscillate slowly at a rate of 1 cycle/s, and the antenna radiates electromagnetic waves in a region of space. What is the period of the charge oscillation
The intensity of a cylindrical laser beam is 0.800 {rm W}/ {rm m} ^ {2}. The cross-sectional area of the beam is 3.0 times 10^ {- 4} {rm m} ^ {2} and the intensity is uniform across the cross section of the beam.
A small spherical cavity of radius r is made in a large electrics (a dielectric material) of constant polarization P. Neglecting the effects of outer boundaries of the electrets find the electric field at the center of the cavity.
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a heighth=3meters and a slope of5degrees with respect to the ground. What is the initial gravitational energy of the box at the top of the ramp
An uncharged capacitor is connected to the terminals of a 2.0V battery, and 9.0?C flows to the positive plate, How much additional charge flows to the positive plate
A diffraction grating with 2.507 X 10^3 lines/cm is used to examine the sodium spectrum. a) calculate the angular separation of the two closely spaced yellow lines of sodium (588.485 nm and 589.067 nm) in the first order. Answer in units of degree..
A tetherball leans against the smooth, frictionless post to which it is attached. what is the force the pole exerts on the ball
a 46-cm-long wire with a mass of 10.4 g is under a tension of 52.5 n. both ends of the wire are held rigidly while it
A cosmic-ray proton in interstellar space has an energy of 10 MeV and executes a circular orbit having a radius equal to that of Mercury's orbit around Sun (5.80 × 1010 m). What is the magnetic field in that region of space.
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