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A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 35.6°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the dispersion of the slab, which is defined as the difference in the angles of refraction for the two wavelengths.
Calculate the focal length required of glasses to be worn, A pair of eyeglasses are designed to allow a person with a near-point distance of 2.52 m to read a road sign at a distance of 25.2 m.
Two equally charged, 1.00 {\rm g} spheres are placed with 2.00 {\rm cm} between their centers. What is the magnitude of the charge on each sphere
Which of the following devices uses total internal reflection function?
A house is 30 ft long and 24 ft wide, and has 8 ft high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimetres.
Emily has a field with uniformly cut grass of height 2 cm which grows at a constant rate. How long would it sustain each animal alone
what would the image distance be (pay attention to sign)? cm d. Could the new image be projected on a screen?
A catapult with a radial arm 4.19 m long accelerates a ball of mass 19.1 kg through a quarter circle. The ball leaves the apparatus at 41.6 m/s. Find the net torque exerted on the ball and arm
Two forces are acting on a 0.250-kg hockey puck as it slides along the ice. what will be the magnitude and direction of the puck\'s acceleration
An ore sample weighs 17.5N in air. When the sample is suspended by a light cord and totally immersed in water, the tension in the cord is 11.2N. Find the total volume of the sample
Two particles oscillate in simple harmonic motion with amplitude A, about the centre of a common straight line of length 2A. How far apart are the particles from each other
At the instant a ball rolls off a rooftop it has a horizontal velocity component +12.0m/s of and a vertical component (downward) of 10.0m/s, What is the ball's speed as it leaves the roof
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 284.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
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