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Question: The speed of light in a material is 0.77×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum? Express the answer with one decimal place.
Dan is gliding on his skateboard at 4.0m/s . He suddenly jumps backward off the skateboard, How fast is Dan going as his feet hit the ground
Two identical, small insulating balls are suspended by separate 0.31-m threads that are attached to a common point on the ceiling. determine the tension in the threads
A 4958-kg truck traveling with a velocity of 18.7 m/s due east collides head-on with a 1695-kg car traveling with a velocity of 11.9 m/s due west. find the momentum of each vehicle prior to the collision
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?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.95 V, What emf and current are induced in the square coil
A point source of light illuminates an aperture 2.00 away. A 15.0 -wide bright patch of light appears on a screen 2.00 behind the aperture. How wide is the aperture
A 1.5 V battery is rate at 1,800 milliamp hrs (mAh). How much electrical energy (in joules) is stored in the battery when it is new
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 115 bpm, How fast are you moving with respect to the Moon
Suppose the surfae a circular space station is rotating at35.8m/s. What must be the value of the radius for the astronauts to weigh one half their weight on earth
A uniform electric field of magnitude 230 V/m is directed in the positive xdirection. A +15.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm). What is the change in the potential energyof the charge field system?
A newly discovered planet has a mean radius of 2020 km. A vehicle on the planet\'s surface is moving in the same direction as the planet\'s rotation, what is the period of the planet\'s rotation
A car with a mass of 1000 kg is on a country road which has its ups and downs or maxima and minima in height. what force does the ground exert on the car
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