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A uniformly charged plastic disk has a radius of 0.100 m. At what distance from the center along the central perpendicular axis is the magnitude of the electric field equal to one-half the magnitude of the field at the center of the surface of the disk?
A particle of mass m is placed on a frictionless horizontal table and attached by two identical massless spicral springs of natural length b and stiffness k, to two fixed points A and B on the table.
Four identical masses of 3.2 kg each are located at the corners of a square with 1.1 m sides. What is the net force on any one of the masses
A heat engine takes in 126 kJ of heat from a reservoir at 820 K and exhausts 88 kJ to a reservoir at 292 K. What is the efficiency of an ideal engine operating between the same two reservoirs
The fastest that anyone has gotten to the top of a local mountain (elevation change of 3500 ft) is 44 minutes. Assume a weight of 160 lb for the bike and rider. What was the average power output used for this ride?
Wavelengths of light from a remote galaxy are found to be 1.5 % longer than the corresponding wavelengths measured here on earth. What ids the speed of the galaxy relative to earth
An important feature of the Carnot cycle is that: A) its efficiency can be 100% B) its efficiency depends on the absolute temperature of the hot reservoir used.
Find out the magnitude of the truck's vertical component of displacement, answer in units of meters.
Describe one model for the origin of the Milky Way Galaxy. How does this model explain the differences between Population I and II stars.
Water starts moving at 10 meters per second at the top of the hill at a pressure of 1 atm. It moves down a pipe and exits at the bottom. The change in height is 5 meters. If the radius of the pipe at the top is 0.1 meters and the radius of the pipe a..
A lamp is designed to operate at a temperature of 3100K. what will be the fractional increase in radiant energy
A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.13 s. How much longer should the pendulum be made in order to increase its period by 0.34 s
A rifle with a barrel length of 58 fires an 11 bullet with a horizontal speed of 370. The bullet strikes a block of wood and penetrates to a depth of 15.
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