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A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.600 diopters. Since these eyeglasses do not completely correct her vision, she must hold a newpaper 42.00 cm from her eyes in order to read it. She wears the eyeglasses 2.00 cm from her eyes. How far is her near point from her eyes?
An underwater diver sees the sun 58 above horizontal. How high is the sun above horizon to a fisherman in a boat above the diver.
A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 28.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground
a 6.37-kg box is sliding across the horizontal floor of an elevator. the coefficient of kinetic friction between the
A 100-kg object moves on a level surface with a coefficient of friction of 0.40. If the initial velocity is 15 m/s, how long will it take for it to come to rest
A man seeking to set a world record want to tow a 109 000 kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 85 kg, and the coefficient of static friction between his shoes and the runway..
Having found the minimum kinetic energy of an alpha particle inside a nucleus to be roughly 2.0 Mev, and given that the typical kinetic energy of an emitted alpha particle is 5.0 MeV, is actually possible for the alpha particle to have existed inside..
two infinitely long charged cylinders are centered on the same axis. the inner cylinder of radius a3cm has a uniform
An x-ray photon of wavelength 0.179 nm collides with an electron initially at rest. Calculate the Compton shift in wavelength
You tie a cord to a pail of water, and you swing the pail in a vertical circle of radius 0.600m. What minimum speed must you give the pail
Two runners approaching each other on a straight track haveconstant speeds of 4.50m/s and 3.50m/s, respectively, whenthey are 100m apart. How long will it take for the runners tomeet, and at what position will they meet if they maintain these speeds?
A mechanic's socket rolls off a 1.5 m high bench with an initial horizontal speed of 0.80 m/s. How far from the edge of the bench does the socket hit the floor
If the total momentum of a system is a constant, then we say that the total momentum is conserved. A consequence of Newton’s laws of physics is that the total momentum of a system is conserved whenever the net external force on the system is zero.
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