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Your friend is diving in ocean water whose refractive index is different from pure water. You send a light beam to see your friend. The light makes an angle of 60 degree with the normal. However your friend under the water finds that the light makes an angle of 35 degree with the normal. Compute the refractive index of the ocean water.
Two lenses, one converging with focal length 21.0cm and one diverging with focal length ? 10.0cm , are placed 25.0?cm apart. Find the final image distance from second lens
A hypodermic needle consists of the plunger of circular cross-section that slides inside a hollow cylindrical syringe. When the plunger is pushed, the contents of syringe are forced through a hollow needle.
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/54s. If the operator then brings it to a stop in3.4min, what is the angular acceleration of the Ferris wheel
An air puck of mass m1 = 0.15 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A lead bullet initially at 12.4oC just melts uponstriking a target. calculate the speed of the bullet upon impact
A 240g block on a 60cm-long string swings in a circle on a horizontal, frictionless table at 70rpm.
a 106 kg object moves in a horizontal straight line with an initial speed of 58 ms. if it is stopped along that line
tarzan swings on a 28.0 m long vine initially inclined at an angle of 32.0° with the vertical. what is his speed at the bottom of the swing if he starts from rest
An object, mass 2.96kg, moves in a horizontal circle with a radius of 3.8m. The object has the intial velocity of 32.6 m s-1. If the kinetic coefficient of friction between the object and the surface is 0.31, then number of completed revolutions (..
While surveying a cave, a spelunker follows a passage 190{\rm m} straight west, then 210{\rm m} in a direction 45.0^\circ east of south, and then 260{\rm m} at 30.0^\circ east of north. After a fourth unmeasured displacement, she finds herself back w..
She only uses the most accelerated depreciation method possible. The computer is the only personal property which she places in service during the year. Illustrate what is her total depreciation deduction for 2011?
If Galileo dropped a 2.37 kg cannon ball from the 58.5m Tower of Pisa, how much work did gravity do on the ball
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