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The index of refraction of the core of a piece of fiber optic cable is 1.76. If the index of the surrounding cladding is 1.23, what is the critical angle for total internal reflection for a light ray in the core incident on the core-cladding interface? Express the answer in degrees with one decimal place.
10C of charge are placed on a spherical conducting shell. Aparticle with a charge of -3C is placed at the center of the cavity. The net charge on the outer surface of the shell is?
question if the driver of an automobile wishes to increase the speed from 40 kmhr to 100 kmhr while traveling a
a 4 cm diameter vertical cylinder is sealed at the top by a frictionless piston. the piston is23 cm above the bottom of
A soccer player kicks the ball toward a goal that is 29.0m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A bead of mass m = 6.90 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.10 m. Determine the bead's speed at points B and C
A hardworking ant must supply 0.00805 N to pull a small piece of fruit at constant velocity over a distance of 9.60 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
Springs, having stiffness k, 2k, 4k, 8k, 16k, and so on are tied in series. Find the effective stiffness of the system.
The maximum current an ac device draws is 1.80 A when connected to a 120 V outlet. What is the effective current of the device
An oxygen bubble at the bottom of a lake 20. m deep has a volume of 1.20 cm^3, calculate the initial pressure inside the bubble at the bottom of the lake
a small object which has a charge q 8.2 microc and mass m 9.80 x10-5 kg is placed in a constant electric field.
q1. sphere pendulum has mass of 1.5 kg attached to a cord length of 11.5 m sphere is released from rest while cord
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
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