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two laser beams fall on a screen and illuminate small circular areas what is the minimum distance between the centers
jordan is building a compound microscope using an eyepiece with a focal length of 750 cm and an objective with a focal
two identical 13-kg blocks are connected by a massless string over a frictionless pulley of radius r 15000 cm and
a transverse periodic wave is represented by the equation yx t 250 cm cos2500 rads t - 150 m-1 x what is the frequency
a find the far point of an eye for which a prescribed lens has an optical power of -062 db find the far point of an eye
two gliders on a level air track approach each other one glider has a mass m1 06 kg and a velocity v1 4 ms the other
an athlete starts at point and runs at a constant speed of 620 around a round track 250 in diameter as shown in
two cars are each traveling at 270 ms and they are approaching each other the security alarm in one of the cars
the intensity in wm2 of one sound is 297 times as great as the intensity of another sound relative to the quieter sound
a uniform 20m tall cylindrical tower of mass 20x104 kg and diameter 50 m is leaning on its base edge at angle of 20
a spool whose inner core has a radius of 100 cm and whose end caps have a radius of 150 cm has a string tightly wound
a gaseous planet like jupiter suddenly loses part of its mass an orbiter about the planet needs to reduce its orbital
imagine a figure that shows a system of two masses connected by a string as m falls a distance h m accelerates up the
a nozzle of inner radius 105 mm is connected to a hose of inner radius 803 mm the nozzle shoots out water moving at 255
football players measure their acceleration by seeing how fast they can sprint 40 yards 37 a zippy player can from a
a swift blow with the hand can break a pine board as the hand hits the board the kinetic energy of the hand is
in a quarter-mile drag race two cars start simultaneously from rest and each accelerates at a constant rate until it
a vw beetle goes from 0 to 102 mih with an acceleration of 442 ms2a how much time does it take for the beetle to reach
an 18-year-old runner can complete a 100-km course with an average speed of 480 ms a 50-year-old runner can cover the
the syncom communication satellite was placed in its high-altitude geosynchronous orbit of radius 423 x 107m in two
you are driving into st louis missouri and in the distance you see the famous gateway-to-the-west arch this monument
a monkey is chained to a stake in the ground the stake is 272 m from a vertical pole and the chain is 382 m long how
a highway is to be built between two towns one of which lies 370 km south and 490 km west of the othera what is the
a partly-full paint can has 020 gallons of paint left in ita what is the volume of the paint in cubic metersb if all
water is flowing through a pipe with a constriction the area of the narrow section is one-half the area of the wide