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problem 1: Laser beam with wavelength 632.8 nm is aimed perpendicularly at opaque screen with two identical slits on it, positioned horizontally, and close enough to each other so that both of them fall in the beam. A precise positioning shield is used to cover alternatively one of the slits, while the other remains open. On an observation screen positioned 1 meter further from the opaque screen, the diffraction patterns from the independent slit illumination were found identical, with minima 4.0 mm apart. The interference pattern maxima from simultaneous illumination of both slits (shield removed) were 1.0 mm apart. What are the double slit characteristics (slit width, slit separation)? Provide the result in millimeters.
problem 2: On the setup described in problem 1, the opaque screen with slits was replaced with a diffraction grating with 20 slits/mm. What distance between the diffraction maxima is to be expected on the observation screen?
A typical nuclear power plant converts 0.01% of the mass of its fuel into energy through nuclear reactions. How much fuel would be needed to power an average city for one day
A girl is sledding down a slope that is inclined at 30º with respect to the horizontal, The combined mass of the girl and the sled is 76.5 kg, How much time is required for the sled to travel down a 149-m slope, starting from rest
The lander is 8.2 meters above the surface and has the downward speed of 0.89 m/s while the engine is cut off. What is the speed of the lander just before it touches the surface.
The moon in its orbital about the earth has a centripetal acceleration about 1/4200 of that an object dropped on Earth's surface. If the moon were twice as far away what would its centripetal acceleration be?
A 4.40-g lead bullet at 24.0°C is fired at a speed of 220 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.8 x 10^4 rev/min, Determine the angle (in radians) through which the drill rotates during this period
A helicopter is ascending vertically with a speed of 5.57. At a height of 124 above the Earth, package is dropped from a window. How much time does it take for the package to reach the ground?
Capacitors C1 = 6.03 uF and C2 = 2.45 uF are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C2
A 3m-long, 300 steel beams extend horizontally from the point where it has been bolted to the framework of a new building under construction. A 73 construction worker stands at the far end of the beam. What is the magnitude of the torque about poi..
A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
A child is twirling a 0.012 kg ball on a string in a horizontal circle whose radius is .100 meters. The ball travels once around the circle in .500 seconds.
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