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Suppose you are looking down at the earth from inside a jetliner flying at a cruising altitude of 10,000m. The pupil of your eye has a diameter of 2.0mm, and the average refractive index of the material in the eye is 1.36. Determine how far apart two cars must be on the ground to sdistinguih between them in (a) red light (wavelength 655nm in a vacuum) and (b) violet light (wavelength 405nm in a vacuum).
an electron in a cathode-ray tube is traveling horizontally at 2.90 times 109 cms when deflection plates give it an
The small piston of a hydraulic lift has a cross-sectional area of 3 cm2, and its large piston has a cross-sectional area of 200 cm2. What force should be applied to the small piston for the lift to raise a load of 15kN
A 62-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion. Find the force (magnitude and direction) exerted on her by the bungee cord at an instant when her downward acceleration has a mag..
a thin metallic spherical shell of radius 40.1 cm has a total charge of 7.65 ?c uniformly distributed on it. at the
A television set connected to a 121 V outlet consumes 88 W of power. How long does it take for 10 million electrons to pass through the television.
A basketball player is standing on the floor 10.0 m from the basket. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, ? = 36.4°, with the horizontal from a height of h = 1.82 m.
A scuba diver and her gear displace a volume of 69.7L and have a total mass of 72.9kg. What is the buoyant force on the diver in sea water
The squadron commander has the mandate that the database update should be complete in less than one minute. If the topo database is 20 GB, and link is SONET, what is the minimum standard rate necessary.
An air mass has a temperature of 68F and 970hPa with a mixing ratio of 5 g/kg. Without any condensation or mixing the air mass now has a temperature of 50F and a pressure of 750hPa. Find the initial and final values of a) r, b) T(dew), and c) vapor p..
A 52.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
A horizontal force of 5.0 N accelerates a 4.0 kg mass, from rest, at a rate of .50 m/s squared in the positive direction. What friction force acts on the mass
A bungee cord is stretched between two poles with a force of 383 N. What is the velocity of a wave on this bungee cord
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