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a parachute dropped from a 30 meter-high clifffalls with a constant velocity of 15 meters per second twenty-twoseconds
the plate separation of a charged capacitor is 00690 m a proton and an electron are releasedfrom rest at the midpoint
ultrasound with a frequency of 425 mhz can be used to produceimages of the human bodyif the speed of the sound in the
a car starts from rest and travels for 70 seconds with auniform acceleration of 25 ms2 the driver then applies
a ball is projected horizontally from the top of a buildingone second later another ball is projected horizontally
carol drops a stone in a mine shaft 1225 metres deep how soon after she drops the stone does she hear it hit the bottom
two balls are released simultaneously from a certain heightone is allowed to fall freely and other thrown with some
two spheres having masses m and 2mand radii r and 3r respectively are released from rest when thedistance between their
if a book rests motionless on a table what forces areacting on itwhat is the net force on the bookhow would the
in theclassical model of conduction the electron loses energy on averagein a collision because it loses the drift
a spring with a spring constant of 100ns is compressed adistance of 01m horizontally when the spring is released
the planet uranus has a mass about 14 times theearths mass and its radius is equal to about 37 earthradiia by setting
a parallel-plate capacitor is made from two aluminum-foilsheets each 40 cm wide and 500 mlong between the sheets is a
a parallel-plate capacitor with plates of area 215 x 10-4m2 is being designed to have a capacitance of 1330 pfa what
the longest stuffed toy ever manufactured is a 420 meter snakemade by norwegian children suppose a projectile is
a passenger in a train that moves horizontally looksoutside and sees a child hitting a ball straight up to a height
the staples inside a stapler are kept in place by a springwith a relaxed length of 0115 m if the spring constant is
a 1500 kg car traveling at 90 kmh east collides with a 3000 kg cartraveling at 60 kmh south the two cars stick together
the filament of a light bulb has a temperature of 28103degc and radiates 55 watts of power the emissivityof the
suppose the surfae a circular space station is rotating at358ms what must be the value of the radius for the astronauts
a satellite circles the earth in an orbit whose radius is twice theearths radius the earths mass is 598 x 10 24 kg and
a 25-kg object is being lifted by pulling on the ends ofa 100-mm-diameter string that goes over two 300-m-high
electrons in an x-ray machine are accelerated from restthrough a potential difference of 50 000v what is the kinetic
assume that the earth has an average surface temperature of29degc and is a perfect emitter of radiation e 1 find the
io a small moon of the giant jupiter has an original period of177 days and an orbit radius equal to 422 x 105 km from