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Two plane mirrors are parallel to each other and spaced 20 cm apart. A luminous point object is placed between them and 5 cm from one mirror. What are the distances from each mirror of the three nearest images in each?
A playground Merry-Go-Round has a mass of 291 kg which can be viewed as being uniformly distributed over a disk of radius 2.4 m. What is the new rotation rate assuming the child remains at the rim
The catapult on an aircraft carrier can take an aircraft from 0 to 197 mph ( the launch speed) in 5 Seconds, at which time the aircraft launches
A 1000kg car is traveling at 9m/s strikes a stationary 2000kg truck. they interlock as a result of the collision and move off as one. what is their velocity after the collision?
A typical American family uses 700 kWh of electricity a month. On average, what is the resistance of a household
A man with a mass of 62 kilogram skis down a frictionless hill that is h = 2.2 meter high. Find at what horizontal distance from the edge of the ledge does the man land
A small button placed on a horizontal rotating platform with diameter 0.315 m will revolve with the platform when it is brought up to a speed of 28.0 rev/min, How far from the axis can the button be placed
The refractive index of a transparent material can be determined by measuring the critical angle when the solid is in air. If ?c= 42.0° what is the index of refraction of the material?
Gas in a container is at a pressure of 1.5 atm and volume of 4 m^3. What is the work done on gas (a) if it expands at constant pressure to twice its initial volume (b) it is compressed at constant pressure to one-quarter its initial volume?
The figure shows tow disks, A and B, commented together, that are rotating with angular acceleration, α. The radius of the small disk B is 2/3 the radius of the larger disk. Compute the h ratio of the tangential velocity of a point on the rim of disk..
A ball is shot from the ground into the air. At a height of 9.4 m, the velocity is observed to be v = (7.8)i + (5.1)j in meters per second (i horizontal, j upward). To what maximum height will the ball rise?
An ideal monatomic gas expands adiabatically from an initial temperature of 368 K and volume of 4.6 m3 to a final volume of 11 m3. If the initial pressure is 1.5 multiplied by Patm, how much work is completed on the gas.
Calculate the percent reflection loss when a beam of radiation passes from air through a plate back into air assuming that the plate has a refractive index of 1.45
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