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a 392-kg boy riding a 267-kg skateboard at a velocity of 537 ms across alevel sidewalk jumps forward to leap over a
a roller ocaster descends 35 meters in its initial drop and then rises 23 meters before going over the first hill if a
a particle of charge q e moves in a circle of radius 046m with speed v 2800times107 mstreating the circular path as
two stars are 20 x 1011 m apart and are equallydistant from the earth a telescope has an objective lens with adiameter
an object is 927 cm from the surface of a reflective spherical christmas tree ornament 838 cm in diameter what is the
a flat uniform circular disk radius 260 m mass 100 x 102 kg is initiallystationary the disk is free to rotate in the
a playground carousel is free to rotate about its center onfrictionless bearings and air resistance is negligible
a 160 pound pilot of an airplane executes a constant speedloop-the-loop maneuver in a vertical plane the speed of
two different simple harmonic oscillators have the samenatural frequency f800 hz when they are on the surface of
a weightless spring of force constant 250 ncm is 150 cm long when nothing is attached to it it is now used to pull
a crate on the floorhas an applied force 11 degrees below horizontal of 815 newtonsthe crate moves with constant
an ideal gas at 145 degc and a pressure of 110 x 105pa occupies a volume of 417 m3a how many moles of gas are presentb
consider a simple transformer that has a 100-turn primary coil and a 1000-turn secndary coil the primary is connected
a 750kg shell at rest explodes into two fragments one with amass of 300kg and the other with a mass of 450kgif the
a descent vehicle landing on maes has a vertical velocitytoward the surface of mars of 55 ms at the same time ithas a
a standing wave on a tight string experiment is set up in thelaboratory the string is stretched between two posts that
a 25 kg mass is at rest hanging vertically attached to aspring that has a spring constant k 3300 nm this mass isstruck
a hydrogen molecule consists of two hydrogen atoms whose totalmass is 53 10 -26 kg and whose moment of inertiaabout an
a block of unknown mass is attached to a spring with a springconstant of 600 nm and undergoessimple harmonic motion
the brightest star in the night skyis sirius which is at a distance of 830times1016 mwhen we look at this star how far
tasha has mass 20kg and wants to use a 40m board of mass 10kgas a seesaw her friends are busy so tasha seesaws by
a wheel radius020m is mounted on a frictionless horizontalaxisa light cord wrapped around the wheel supports a050kg
a person is riding a bicycle the wheels of a bicycle have anangular velocity of 220 rads then the brakes are applied
a 300 kg object connected to spring with a force constant of 500 nm oscillates on frictionless horizontal surface if
an aluminum rod is 185 cm long at20degc and has a mass of 350 g if 10500j of energy is added to the rod by heat what is