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Light from a helium-neon laser (?=633nm) passes during a circular aperture and is observed on a screen 4.0m behind the aperture. The width of the central maximum is 2.5cm.
Determine what is the diameter (in mm) of the hole?
There is a +10 nC charge inside a cube of size 5 cm. What additional charge must be placed into the cube
An airplane is flying with the velocity of 82.0 at an angle of 22.0 above the horizontal. When the plane is a distance 111 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog..
A wire has a current density of 17.0 A/mm2. If Thedrift velocity is 4.0 x 10-8 m/s, how many free electrons does the wire have in a 1.0 m length
A 120cm3 box contains helium at a pressure of 1.50atm and a temperature of 80.0?C. What is the final pressure in each box
A flat (unbanked) curve on a highway has a radius of 240 meter. A car rounds the curve at a speed of 18.0 m/s. Find the minimum coefficient of friction that will prevent sliding
A ball of mass 0.350 kg is swung at the end of a 2.40m string such that the plane of its path is horizontal, find the angle which the string makes with the verticle
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 19.5 kg · m2. She then tucks into a small ball, decreasing this moment of inertia to 3.65 kg · m2. While tucked, she mak..
Suppose that the earth is a uniform sphere and that its path around the sun is circular. Find the kinetic energy that the earth has because of its rotation about its own axis
One can make a “dry ice bomb” by dropping a chip of dry ice (solid CO2) into a plastic 2-liter bottle of warm water and sealing the cap. The CO2 sublimates into gas, and the gas pressure ultimately blows the bottle apart. Assume that the 2.00-liter b..
an airplane is dropping bales of hay to cattle stranded in a blizzard on the great plains. the pilot releases the bales
A 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down
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