Top surface of the glass
A plate of glass with parallel faces having a refractive index of 1.52 is resting on the surface of water in a tank. A ray of light coming from above in air makes an angle of incidence 34.5 with the normal to the top surface of the glass.
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How long does it take the boat to complete a trip consisting of a 283 m displacement down-stream followed by a 257 m displacement up-stream?
A bird that can fly 60 km/h flies off the front of one train when they are 70 km apart and heads directly for the other train. On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would b
If the ball is in contact with the wall for 5.00 ms, what is the magnitude of the average acceleration of the ball during this time interval?
Sally applies a horizontal force of 462 N with a rope to drag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 56 degrees. How much force is exerted by the rope on the crate?what work is done
A tank with vertical walls, 2m wide and 2m long and 2.5m high, is filled with 4800 litres of water (density 1000 kg/m3) and 3200 litres of light oil (density 900 kg/m3). Calculate the magnitude and location of the resultant force on each of the ve
What is the speed of an electron that has been accelerated from rest through a potential difference of 1050 ?
In the redesign of a machine, a metal cubical part has each of its dimensions tripled. By what factor do its surface area change?
What contributions did Eleanor Roosevelt and John COllier make for African Americans and American Indians?
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