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A thin layer of oil (n=1.25) is floating on water (n=1.33). What is the minimum non zero thickness of the oil in the region that stronbly reflects red light ( lambda=695nm)?
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. The brother's outstretched hand catches the keys 1.20 s later.
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
You are a professional frontier re-enactor who specializes in making lead shot. To do this you put 2 kg of ice into 2 kg of water, both at 0 C, into an insulated bucket.
A large man sits on a four-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg, what pressure does each leg exert on the floor
A bullet is fired into a block of wood sitting on a block if ice. The bullet has an initail velocity of 500m/s and a mass of 0.005 kg. What is the magnitude of the impulse that acts on the block of wood
A ball is thrown upward from the ground with an initial speed of 23.90 m/s; at = same instant, a ball is dropped from a building 16 m high. After how long will the balls be at the same height.
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. How many dark fringes are observed when 600 nm light illuminates the slides from directly above
From another measurement, you have found that velocity of the jumper's center of mass has only a y component of v2=2.5 m/s as the jumper's feet leave the floor.
A laser used in eye surgery emits a 3.08 mJ pulse in 1.04 ns, focused to a spot 32.4 um in diameter on the retina. Calculate (in SI units) the power per unit area at the retina
In an amusement park ride, cars are suspended from L = 4.20 m cables attached to rotating arms at a distance of D = 6.06 m from the axis of rotation. What is the angular speed of rotation
An object is 12.0 cm from the surface of a spherical Christmas tree ornament that is 8.00 cm in diameter. What is the magnification of the image
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