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The normal human eye has maximum visual acuity with a pupil size of about 3. For larger pupils, acuity decreases due to increasing aberrations; for smaller pupils, acuity decreases due to increasing effects of diffraction. If your pupil diameter is 2 , as it would be in fairly bright light, what is the smallest diameter circle that you can barely see as a circle, rather than just a dot, if the circle is at your near point, 25 from your eye? Assume the light's wavelength in air is 600 and the index of refraction inside the eye is 1.33.
A horizontal spring with k = 110 n/m has one end attached to the wall. A 240g block is pushed onto the free end, compressing the spring by 0.190m. what's its speed when it leaves the spring
A top spins at 30rev/s about an axis that makes an angle of 30 deg. with the vertical. what is the direction of precession as viewed from overhead
A plate carries a charge of -3.11mC,while a rod carries a charge of +2.02mC.How many electrons must be transferred from the plate to the rod,so that both objects have the same charge.
A uniform 1200N beam that is 3.50 m long is suspended horizontally by two vertical wires at its ends. what will be the initial angular acceleration of the system
a. the muon is traveling at 0.982 c what is its momentum? the mass of such a muon at rest in the laboratory is known
After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.8 m/s. How fast do the two of them slide across the snow together on the inner tube
a 1.000 meter long rod (measured when stationary) is moving at 0.8 c. How long would the rod appear to a stationary observer
How much work did movers do (horizontally) pushing a 150-{rm kg} crate 10.6 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
In the last seconds of the championship basketball game, a 7 ft center's team is down by 2 points. He must make a 3 point shot to win the game. He is standing on the 3 point shot line.
A laser beam is incident at an angle of 42.0° to the vertical onto a solution of corn syrup in water. what is the index of refraction of the syrup solution
A 28.0-g object moving to the right at 20.0 cm/s overtakes and collides elastically with a 7.0-g object moving in the same direction at 15.0 cm/s
Find the flux of the Earth's magnetic field of magnitude 5x10^-5, through a square loop of area 10cm^2 for the following
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