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A ray in a glass is incident onto a water-glass interface, at an angle of incidence equal to half the critical angle for that interface. The indices of refraction for water and the glass are 1.33 and 1.94, respectively. The angle that the refracted ray in the water makes with the normal is approximately....
A textbook of mass 1.91 kg rests on a frictionless, horizontal surface. compute the tension in the part of the cord attached to the book
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.27 × 10-6 T. What is the intensity S of the wave
A person has a near point of NP = 85 cm and a far point of FP = 210 cm. Write a formula for the power, P1, of the upper portion of the bifocals, in terms of the given quantities, that will enable the person to see distant objects clearly
The low temperature in a freezer is -20 C, and the discharge temperature is 35 C. What is the maximum theoretical coefficient of performance
A bullet of mass 0.018kg traveling horizontally at a high speed of 290m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface.
During a game of football, the ball is kicked by the punter with a speed of 20m/s at an angle of 40 degrees above the horizontal. A player on the other team, standing 50m away, starts running to catch the ball immediately after it is kicked. ASsu..
A farsighted person uses glasses with a refractive power of 3.6 diopters. What is this person's near point when not wearing glasses
The mass of each can be taken to be 37,000 . If the train is accelerating at on a level track, elucidate the tension in the coupling between the second and third cars? The car nearest the locomotive is counted as the first.
Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is ?A = 591nm. The other wavelength is ?B and is unknown. What is the unknown wavelength
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force.
A thick copper wire of length 10 m is observed to stretch 0.10 cm. What is the strain? If the applied force is 50,000 N, what is the diameter of the wire
a proton has an initial speed of 3.5 105 ms. a what potential difference is required to bring the proton to rest? b
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