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A critical angle may occur if a wave travels from a substance having a high refractive index to a substance with a low refractive index. If the critical angle for a given liquid-air system is 49.5 degrees, what is the refractive index of the liquid? Show all work
when a mass of 180g is attached to a vertical to a vertical spring and lowered to its equilibrium position, it is found that the spring extends 12cm. what is the period of the resulting oscillations
what is the minimum potential difference that must be applied to an x-ray tube to knock a k-shell electron completely
A 105 kg fullback is running at 4.8 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west. Calculate the average force exerted on the tackler
A tennis ball rolls off the edge of a tabletop 0.850 above the floor and strikes the floor at a point 1.60 horizontally from the edge of the table. Find the time of flight of the ball.
Two manned satellites approaching one another at a relative speed of 0.200 m/s intend to dock. Calculate the final velocity after docking
A right circular cylinder has a diameter of 8.3 in and a height of 10 ft. What is the volume of the cylinder in cubic feet
A point charge Q is located on the x axis at x = 2.0 meter. A second point charge, -Q, is placed at x = 3.0 meter. If Q = 40 mC, find what is the magnitude of the electrostatic force on a 30-mC charge located at the origin
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 ?C and rejects heat to a room of temperature 21.5?C, How much energy must be supplied to the device
The collision is elastic and all motion is in one dimension. (Nothing bounces off at an angle.) Find the velocities of the two steel balls in terms of m and v0.
The cathode-ray tubes that generated the picture in early color televisions were sources of x rays. what are the shortest-wavelength x rays produced by the television
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter, calculate the potential difference between its feet
A parallel-plate capacitor in air has a plate separation of1.37 cm and a plate area of 25.0cm2. The plates are charged to a potential difference of268 V and disconnected from thesource. The capacitor is then immersed in distilled water. Assumethat..
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