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A 330-power compound microscope has a 4.9mm focal-length objective lens.
If the distance from eyepiece to objective is 12cm, what should be the focal length of the eyepiece? Assume that a near point distance is 23cm.
Starting from rest, a 98 kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 800N, and his speed at the bottom of the pole is 3.2 m/s. How far did he slide down the pole.
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
What is the kinetic energy
A meter stick, sitting on a frictionless table top, is struck by a wad of clay with a force, F = 4.0 N at an angle. The meter stick will rotate in the plane of the table. Conclude the magnitude of the torque about the axis of rotation located at t..
Two long parallel wires each with a mass per unit length of 25.10 g/m are supported in a horizontal plane by 2.5 cm long strings. Each wire carries the same current, I, causing the wires to repel each other so that the angle between supporting string..
what is the total displacement of the jetliner between touchdown on the runway and coming to rest.
A 280-g block on a 52 cm long string swings in a circle on a horizontal, frictionless table at 95 rpm. What is the speed of the block.
While riding her bicycle on a 140 meter track, a rider took 18 seconds on her first lap and 17 seconds on her second
Care for the coffee as though it were pure water and neglect energy exchanges with environment.
An airplane flies due south at 190-km/h relative to the air. There is a wind blowing at 73.0 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground.
A 7 g bullet collides horizonally with a 43 g block resting on a frictionless horizontal surface as shown in the accompany diagram. The bullet remain embedded in the block and subsequently causes the block to slide down a frictionless slope onto a..
A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water, what is the speed of the empty flask, Assume its initial velocity is zero
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