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A prescription for a corrective lens calls for + 3.20D . The lensmaker grinds the lens from a "blank" with n = 1.56 and a preformed convex front surface of radius of curvature of 35.0cm .
Part A. What should be the radius of curvature of the other surface? Express your answer to two significant figures and include the appropriate units.
A 15000-kg vehicle travels at a constant speed of 22 m/s around a circular track that has a radius of 85 m.Determine the magnitude of the net force that acts on the vehicle
A nylon guitar string has a linear density of 7.0 g/m and is under a tension of 150 N. The fixed supports are distance D = 90.0 cm apart. calculate the frequency of these traveling waves
From street level, Superman spots Lois Lane in trouble-the evil villain, Lex Luthor, is dropping her from near the top of the Empire State Building. At that very instant, the Man of Steel starts upward at a constant acceleration to attempt a midair r..
A model of a golf ball is to be studied to determine the effects of the dimples. A sphere 10 times larger than an actual golf ball is used in the wind tunnel study. What speed should be selected for the model to simulate a prototype speed of 50 m=..
A 20000kg rocket has a rocket motor that generates 3.0×10^5 N of thrust. What is the rocket's initial upward acceleration
plan a free-body diagram for the charge.
A 2.5-m-long steel wire in a musical instrument has a radius of 0.02 mm. When the wire is under a tension of 91 N, how much does its length change
A package is dropped from a helicopter that is ascending at a steady speed of 12 m/s. How long will the package spend in the air
A uniform magnetic field , with magnitude 1.2 mT, is directed vertically upward throughout the volume of a laboratory chamber. What magnetic deflecting force acts on the proton as it enters the chamber
There is a potential difference of 1.6V between the ends of a 19cmlong graphite rod that has a cross sectional area of1.2mm2. The resistivity of graphite is 7.5 x 10-6ohms-m.
Why are membranes made up of two-tailed lipids instead of single-tailed ones? They're more difficult to make and one might expect evolution to select against them.
q1. according to the guinness book of world records 1990 edition p. 169 the highest rotary speed ever attained was 2010
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