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1. Blue light at 480nm impinges perpendicularly on a pair of very narrow parallel slit apertures separated by 0:15mm. A fringe pattern appears on a screen 2m away. How far (in mm) from the central axis on either side will we find the second-order (m = 2) bright bands?
2. Red plane waves from a ruby laser (lambda= 694.3nm) in air impinge on two parallel slits in an opaque screen. A fringe pattern forms on a distant wall, and we see the fourth bright band 1 degree above the central axis. Calculate the separation between the slits (in mm).
3. Parallel rays of blue light from an argon ion laser (lambda = 487.99nm) are incident on a screen containing two very narrow slits separated by 0:2mm. A fringe pattern appears on a sheet of film held 1m away. How far (in mm) from the central axis is the fourth maximum?
An archer pulls her bowstring back 0.420 m by exerting a force that increases uniformly from zero to 220 N. How much work is done in pulling the bow
A +3 mC point charge is placed at the center of the -6 mC spherical shell. Show how the charge is distributed through the spherical shell on a diagram
Two crates of mass 65 kg and 125 kg are in contact and at rest on horizontal surface. A 650 N force is excerted horizontally on the 65 kg crate. evaluate the acceleration of the system
An alpha particle (the nucleus of a helium atom, with charge +2 and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.6 nm apart
The Helium-Neon laser used in many labs and demos emits red light with wavelength of 0.6328 ?m. calculate how many photons of red light emerge from the laser every second
a 0.223 kg ball is thrown straight up from 1.81 m above the ground. its initial vertical speed is 8.40 ms. a short time
A bullet emerges from the muzzle of agun with a speed of 300m/s. calculate the time for the bullet to travel the lenght of the barrel, assuming the force is zero at the end of the barrel
A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal, What is her speed when she leaves the track
A 46.6 ?F capacitor is connected to a 46.7 ? resistor and a generator whose RMS output is 24.4 V at 54.0 Hz. Calculate the phase angle for the circuit
Two metal spheres, each of radius 5.0 cm, have a center-to-center separationof 3.20 m. Sphere 1 hascharge +1.10 10-8 C. Sphere 2 hascharge of -5.00 10-8C.
Find out the angle of flint glass prism which should be combined with a crown glass prism of 5 degree so as to give dispersion but no deviation
A cart that is initially at rest moves down a slope that is inclined at 5o above the horizon, What is its final speed at the end of the slope
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