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A 3mm diameter circular hole in an opaque screen is illuminated normally by plane waves of wavelength 550 nanometer. A small photocell is moved along the central axis recording the power density of the diffracted beam. Find the locations of the first three maxima and minima as the photocell approaches the screen.
A thin, uniform, metal bar, 3m long and weighing 85 N, is hanging vertically from the ceiling by a frictionless pivot. Find the angular speed of the bar just after the collision
Let us model the electric behavior of such a molecule by a pair of ±1.60 × 10-19-C charges connected by a spring with force constant 8.29 × 10-4 N/m, Find the charge separation distance in an electric field of 6.41 × 105 N/C
The rotational speed of an auto mobile engine is increased at a constant rate from 1400 rev/min to 3100 rev/min in 16 s. Find its rotational acceleration in revolutions per minute-squared
A converging lens of focal lengthf = 46 cmis placed 189 cm to the left of a metallic sphere of radius R = 1.00 102 cm. find the height of the image formed by the metallic sphere
A 1,800-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
An aluminum wire has the same resistanceas a copper wire of the same length. Find the ratio of the aluminumwire's diameter to the copper wire's diameter.
A cat is sitting on the rim of a wooden turntable that is free to turn about a vertical axis. how fast does the turntable's rim move relative to the ground
The right ascension of the star Vega, brightest star in theconstellation Cygnus, is 18h 37m 12s. If Vega’s Hour Angle is +3h 10m, what is the LocalSidereal Time?
When you walk with a cup of coffee (diameter5 cm) at just the right pace of about1 step per second,What is the speed of the waves in the coffee
Using the factor labeling method, solve: There are 12 norps in 2.9 bargs; 4.2 norps in 5.7 krips; and 5821 krips in 11.8 flegs. how many flegs would your bargs be worth
A 30 nF capacitor is in series with a 1.40 M ohms resistor. The capacitor is initially uncharged when the series combination is connected across a 24.0 V battery. find the maximum charge the capacitor will eventually attain
A dolphin locatedin sea water at a temperature of 25°C emits a sound directedtoward the bottom of the ocean 200 mbelow. How much time passes before it hears an echo
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