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An individual is nearsighted; his near point is 17.0 cm and his far point is 53.0 cm.
1. What lens power is needed to correct his nearsightedness?
2. When the lenses are in utilize, what is this person's near point?
A 750 N box moves at a constant velocity on a floor with a coefficient of static friction = 0.800, What horizontal force is required to keep the box moving
A thin flake of mica (n = 1.58) is used to cover one slit ofa double-slit interference arrangement. what is the thickness of the mica
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the road. how fast can the truck be moving without the crate sliding
an air-track glider of mass 0.100 kg is attached to the end of a horizontal air track by a spring with force constant
A positive point charge Q1 = 5.0*10-5 C is fixed at the origin of coordinates, Find the location(s) where the total electric field is equal to zero
A 0.13 kg baseball is hit by a .95 kg bat. The contact point on the bat is moving at 40 m/s just prior to ballbat contact, How fast is the ball moving just after impact
A rock is dropped from a sea cliff and the sound of it striking the ocean is heard 4.4 s later. If the speed of sound is 340 m/s, how high is the cliff
A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi, How many helium atoms are in the cylinder
A 1500 kg car is headed directly for a brick wall when the driver realizes the danger and slams on the brakes. The car's initial speed is 32 m/s, Determine how far the car travels while skidding to a stop
a boat capable of making 10.0 kmh in still water is used to cross a river flowing at speed of 4.0 kmh. the boat is
a block, m= 3 kg, slides on a frictionless horizontal surface.It then goes up a 15 degree incline having a coeffecient offriction uk=0.30 a distance L before stopping. find the acceleration of the block on the plane
Consider an insulated enclosed volume of 27m^3 containing dry air at 23 degrees celsisus and 980mb, What is the specific volume and mass of the air sample
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