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A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.658 diopters. Since these eyeglasses do not completely correct her vision, she must hold a newspaper 41.3 cm from her eyes in order to read it. She wears the eyeglasses 2.05 cm from her eyes. How far is her near point from her eyes?
You are holding a compass 3.60 m from a longstraight electrical supply wire that is carrying a direct currentperpendicularly to the local direction of the Earth's magneticfield. Instead of orienting to any consistent "north" direction, the compass..
Imagine the flow of water through a pipe which has a radius of 10 cm. what is the approximate flow velocity at the center of the pipe
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
A 5.97kg block is traveling on a one-dimensional frictionless surface. The block strikes a second block of mass 5.08kg that was initially at rest, What was the initial momentum of the first block
A 1540.0 g mass is ona horizontal surface with μk = 0.31, and is in contact with a massless spring with a force constant of 787.0N/m which is compressed.
Particles called ?-mesons are created by accelerator beams. If these particles travel at 2.80 ? 108 m/s and live 2.60 ? 10-8 s, how long do they live as viewed in the laboratory
A vibrating source generates a harmonic wave on a string underconstant tension. If the power delivered to the string is doubled, by what factor does the speed change
a disk of radius 1.2 cm has a surface charge density of 7.0 microcm2 on its upper face. what is the magnitude of the
At relatively high temperatures nitrogen and oxygen more readily form a compound according to: N2(g) + O2 2NO(g). Calculate kp given that the initial pressures of nitrogen are 95 atm and 80 atm
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
A block of mass m is at restlying on the face of an incline plane.Theplane makes an angle (theta) with the horizontal. Draw the free-body diagram showing all forces acting on theb lock.
a stone is trown vertically downward at an initial speed of 14ms from a height of 65m above the ground.how far does the
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