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a thin bi-convex lens with index of refraction n15has radii of curvature for its left and right surfaces of magnitude15
a pole projects horizontally from the front wall of a shop a51-kg sign hangs from the pole at a point 22m from the wall
how much lift is exerted on the wings of an airplane that have atotal surface area of 102 m2 when the difference in air
a system of 1506 particles each ofwhich is either an electron or a proton has a net charge of-4704 10-17 ca how many
a 386-khz tone is being produced by a speaker with a diameterof 0239 m the air temperature changes from 0 to 284oc
suppose the strings on a violin are stretched with the sametension and each has the same length between its two fixed
a string on a string bass is tuned to vibrate at a fundamentalfrequency of 560 hz if the tensionin the string were
a 70 kg window cleaner uses a14 kg ladder that is 54 m long he places one end on the ground23 m from a wall rests the
a 78 g arrow is fired from a bowwhose string exerts an average force of 95 n on the arrow over adistance of 84 cm what
two friends are playing a version of proton golf where the hole ismarked by a single proton the first friend reads his
a 15 kg ball is thrown straight up with aninitial speed of 12ms what will be the potential energy of the ball when it
incident light in air impinges on a diamond if the angle ofthe incident ray is 60deg from the normal find the angles of
a 5kg block rests on an incline plane thathas a slope angle of 25 degrees what is the magnitude of the frictional force
nbspan inductor l 400 mh a capacitor c 530 muf a resistorr 500 omega are connected in series a 500 hz ac generator
a stone isdropped off a 30m high cliff how long does it take to reach the
an artillery shell is fired with an initial velocity of 300 ms at620deg above the horizontal toclear an avalanche it
calculate the linear speed due to the earths rotation for aperson at a point on its surface located at 40 degrees n
a simple pendulum is made from a string that is 060m inlength with a mass of 02kg attached to the free end the mass
if a supersonic jet traveling at mach 3 atan altitude of 20 000 m is directly overhead at time0a how long will it be
a ferris wheel starts at rest and builds up to a final angularspeed of 060 rads while rotating through an angular
a 00500 kg cube of ice at an initial temperature of-150oc is placed in 0600 kg of water at t 450oc in an insulated
a sophomore with nothing better to do adds heat to 0350 kg ofice at 00oc until it is all melteda what is the change in
an oil bubble 01 cm long traveling in a water filledcapillary tube 0005 cm radius comes to a restriction only 00005cm
a 20-kilogram object moving with a velocity of 50 ms in thepositive x direction strikes and sticks to a 30-kilogram
two pianos each sound the same note simultaneously but they areboth out of tune on a day when the speed of sound is 345