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A film of soapy water (n = 1.33) on top of a sheet of crown glass has a thickness of 220 nm. What wavelength is most strongly reflected if it is illuminated perpendicular to its surface? (This is the apparent color of the soapy film.)
The average speed of the space shuttle while in orbit is about 8850 m/s. How far does the space shuttle travel
A 22.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 3.50 cm in diameter. How far to the side does the top of the pole flex
a proton traveling at 3.60 kms suddenly enters a uniform magnetic field of 0.750. t traveling at an angle of 55.0
a 97-mw vertically polarized laser beam passes through a polarizer whose polarizing angle is 15deg from the horizontal.
A photographer in a helicopter ascending vertically at a constant rate of 12.5m/s accidentally drops a camera out the window when the helicopter is 62.0m above the ground. What will its speed be when it hits
A metal worker in a foundry needs to melt aluminum. Thealuminum (3.5 kf) is at room temperature (20 C). How much energy inJoules is needed to melt the aluminum
What is sign and magnitude of charge
A car initially traveling at 33.1 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied. How many revolutions does each tire make before the car comes to a stop
While running, a man dissipates about 0.60 Joule of mechanical energy per step per kilogram of body mass. determine how fast is the man running
A wheel, originally rotating at 126 rad/s undergoes a constant angular deceleration of 5.00rad/s2. Find its angular speed after it has turned through an angle of 628 radians
a ball is attached to a center post by a string that is 0.378 m long. the ball is moving in a circle on a frictionless
A mining lift, with a 80kg cage, should be able to pull up to the surface ten 90kg miners, from a 20m deep well, in 20s. If the gearboxes available have an efficiency of 75%, what should be the power rating of the DC motor used. If the driving gear p..
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