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The index of refraction of the core of a piece of fiber optic cable is 1.72. If the index of the surrounding cladding is 1.41, what is the critical angle for total internal reflection for a light ray in the core incident on the core-cladding interface?
The electric field of a sinusoidal electromagnetic wave obeys the equation E=?(375V/m)sin[(5.97×1015rad/s)t+(1.99×107rad/m)x]. What is the amplitude of the electric field of this wave
A 5.0micrometer strand of DNA carries +e charge per nm of length. Treating it as a charged line, what's the electric field strength 28 nanometer from the DNA, not near either end
A 1350 kg car accelerates uniformly from 35.5 km/h to 75.5 km/h over 250 m. Determine the time taken for the car to accelerate
An object is located at -3 cm. If its maximum oscillation amplitude 9cm what is the phase constant in radius
A 4.9-N hammer head is stopped from an initial downward velocity of 3.2 m/s in a distance of 0.45 cm by a nail in a pine board. Calculate the downward force F exerted by the hammer head on the nail while the hammer head is in contact with the nail a..
A 100 arrow is shot vertically from a bow whose efficient spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does the arrow rise .
An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231 resistor, Obtain the voltage of the generator
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration (magnitude and direction) of the man
A square with sides of length L=.1 m has a point charge of 2 microC at each of its four corners. Find the magnitude of the force acting on any one of the charge
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. What must be the height h of the first hill
A 100 kg cannon at rest contains a 10-kg cannon ball. When fired, cannon ball leaved the cannon with a speed of 450 m/s. What is the recoil speed of the cannon.
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
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