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A light wave in air is incident on a water surface,
(a) At what angle of incidence are the reflected and refracted waves at right angles to each other?
(b) What is the reflectivlty of the water for normal incidence?
(c) At what angle of incidence is this wave totally reflected by the water?
A thin gold ring of radius 1.11 cm carries a uniform charge per unit length of 1.1e-14 C/m. Find the electric field on the axis of the ring
A point rotates about the origin in the xy plane at a constant radius of 0.114 m and angular velocity of 7.40 rad/s. What is the amplitude of this motion
A 100 kg car travelling at 20 m/s collides with a 100 kg car traveling at 8 m/s in opposite direction, a) if the two cars stick together, what is their final velocity
A racquetball strikes a wall with a speed of 30 \rm m/s and rebounds with a speed of 26 \rm m/s. What is the average acceleration of the ball
An airplane goes North with an average speed of 100m/s, What is the plane's velocity relative to the ground
The edge of a cube consist of equal resistors of resistance R, that are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance.
A roller coaster car of mass 250 kg has a speed of vo = 12 m/s at point A, located at a height of h = 15 m. find the speed of the car when it reaches point B. use energy ideas
Suppose an object is set sliding, with a speed less than escape velocity, on an infinite frictionless plane in contact with the surface of the Earth. Describe its motion.
The Mars rover was deployed on the surface of Mars in July 1997. At one point during its subsequent mission, How far was Mars from the from Earth at that time
What is the location of an object for which the magnitude of the image distance is one-fourth the magnitude of the object distance
Consider a nonconducting rod that would make a great wire except for the fact that it is nonconducting, Find the electric field strength at a point on the axis of the rod
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-kg cart that is held initially at rest. What is the total momentum of the system of the two carts at this instant
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