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Consider the equation for the velocity of an electromagnetic wave in a wire on the bottom of page 621. Under what conditions would this velocity be greater than c (the speed of light)?
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 55.3 J and a maximum displacement from equilibrium of 0.213 m. (a) What is the spring constant? N/m (b) What is the kinetic energy of the sys..
While at the county fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find the motion somewhat unpleasant. What is the magnitude of your acceleration
A roller coaster at the top of a 39.0 m high vertical loop istraveling 13.8 m/s. Find the maximum speed of the cars as they movethrough the bottom of the loop
A car drives straight off the edge of a cliff that is 46 m high. How fast was the car traveling when it went over the cliff
An extreme amusement park ride accelerates its riders upward from rest to 50.0 m/s in 7.00 seconds. Ignoring air resistance, what average upward force does the seat exert on a rider who weighs 1120 N?
a brass cylindrical bar at 300 k has a diameter of exactly 40 mm. an aluminum ring has an inner diameter which is
Two skaters, one with mass of 58 kg and the other with mass 41 kg, stand on an ice rink holding a pole of length 9.5m and negligible mass. Starting from the ends of the pole, the skaters pull them selves along the pole until they meet. How far doe..
What uniform magnetic field, applied perpendicular to a beam ofe lectrons moving at 2.3*106 m/s, is required to make the electronstravel in a circular arc of radius 0.60m?
A movie camera has a converging lens with a focal length of 80.0 mm. What is the height of the image on the film
A U.S. penny has a diameter of 1.9000cm at 20.0 C. The coin is made of a metal alloy (mostly zinc) for which the coefficient of linear expansion is 2.6x10^-5 K^-1. What would its diameter be on a hot day in Death Valley
A satellite circles the earth in an orbit whose radius is 3.26 times the earth's radius. What is the period of the satellite
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
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