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A nearsighted patient's far point is 0.645 m from her eyes. She is able to see distant objects in focus when wearing glasses by a refractive power of -1.6 diopters. What is the distance among her eyes and the glasses?
An observer on the ground watches the boy throw the can and catch it. In this observer's ground frame of reference, explain the shape of can's path and determine the initial velocity of the can.
When connected in series to a 110-V line, two resistors use one-fourth the power that is used when they are connected in parallel. what is the resistance of the other
A 5000 kg helicopter accelerates upward at 0.50 m/s2 while lifting a 2000 kg car. What is the lift force exerted by the air on the rotors? Evaluate the tension in the cable that connects the car to the helicopter?
the speed of light in a vacuum is 3108 ms . the speed of light whitin a particular substance is 1.5 108 ms. the index
a high-voltage transmission line with a resistance of 0.255 ?km carries a current of 1.25 ka. the line is at a
A proton is projected in the positive x direction into a region of uniform electric field Earrowbold = (-5.40 multiplied by 105) i hat bold N/C at t = 0. Determine the acceleration of the proton
A satellite is in a circular orbit around the earth. The period of the satellite is 25.4 hr. Calculate the radius of the orbit and speed of the satellite
a solenoid of radius 3.0 cm has 350 turns and a length of 21 cm.a find its inductance.b find the rate at which current
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
A stone is dropped into a deep canyon and is heard tostrike the bottom 10.2 seconds after it is released. How deep is the canyon
Find the electric and magnetic field amplitudes in an electromagnetic wave that has an average energy density of 2.7 J/m3. electric field
A object-spring system oscillates with an amplitude of 2.8 cm. If the spring constant is 205 N/m and object has a mass of 0.50 kg, evaluate the maximum acceleration of the object
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