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The central order for a diffraction pattern from a rectangular aperture is measured to be 15 mm high and 5 mm wide on a screen 1 m away. If the illumination has a wavelength of 633 nm, what is the aperture's
a) height?
b) Width?
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. How fast are the waves traveling
An L-C circuit containing an 73.5-mH inductor and a 1.05-nF capacitor oscillates with a maximum current of 0.705 A. Calculate the oscillation frequency of the circuit
Suppose 60kW is to be transmitted over two 0.150? lines, Estimate how much power is saved if the voltage is stepped up from 200V to 2000V
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. Find the acceleration of the box
A person lying on an air mattress in the ocean rises and falls through one complete cycle every 5 seconds. determine the frequeny and the speed of the wave
What minimumdistance are they from each other? The angle may be too large to use small angle approximation. suppose in units of m.
A car of mass 1200kg is heading east at 10m/s. A second car of mass 1500kg is heading west at 20.0m/s. They meet in an elastic collision. What was the initial kinetic energy of the system
A long, narrow rectangular loop of wire is moving toward the bottom of page with a speed of 0.025 m/s. The loop is leaving a region in which a 2.1 T magnetic field exists; magnetic field outside this region is zero. All through the time of 1.0 s, wha..
A girl delivering newspapers covers her route by traveling 9.99 blocks west, 4.00 blocks north, and then 1.00 blocks east
Find the minimum initial speed of a projectile in order for it to reach a height of 2201 km above the surface of the earth
A person in an elevator is holding a 25 kg block by a cord rated to withstand a tension of 335 N. Starting from rest, the elevator begins to move upwards at a constant acceleration and the cord holding the block breaks. What was the least accelera..
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates, Determine the work done by the net external force acting on the skier
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