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a weightlifter stands up from a squatting position whileholding a heavy barbell across his shoulders1 draw a freee-body
the two objects with different mass m1 50kg and m2 30 kg in the atwoods machineshown in the figure are released from
in a certain cyclotron a proton moves in a circle of radius0800 m the magnitude of the magneticfield is 110 ta what is
a piece of charcoal used for cooking is found at the remains of anancient campsite a 098 kg sample ofcarbon from the
an earth satellite moves in a circular orbit with an orbitalspeed of 4300 msfind the elevation of the satellite over
a 2150 kg satellite used in a cellular telephone network is ina circular orbit at a height of 810 km above the surface
a 10 kg ball is at rest on the floor in a 20 m x 20 m x 20m room of air at stp air is 80 nitrogen n2 and 20oxygen o2 by
a softball of mass 0220 kg that is moving with a speed of 85 mscollides head- on and elastically with another ball
a spider hangs from a strand of silk whose radius is 360 10-6 m the density of the silk is 1300kgm3 when the spider
a wire encloses an irregularly shapedsurface that is symmetric about the z-axis and lies in thexz-plane a 2a current
anrl circuit has an emf source of 13v a resistor a 20 h inductorand a switch if the emf across the inductor is 80 of
a guitar string has a length of 8 m if the wave speed ofthe spring id 560ms what is the frequency of the sixth
as measured in earths frame of reference two planets are 424000km apart a spaceship flies from one planet to the other
a sample of an unknown material appears to weigh 300n in air and 200n when immersed in alcohol of specific gravity 0700
the wave function for a traveling wave on a taut string is in siunits the following equation yx t 0382 msin14pit -
a car sits in an entranceramp to a freeway waiting for a break in the traffic the driveraccelerates with constant
you rev your cars engine to 2900 rpm revminpart a what is the period of the engine in secondspart b what is the
a spaceship ferrying workers to moon base i takes a straight-linepath from the earth to the moon a distance of about
a sled of mass 500 kg is pulled along flat snow-coveredground the static firiction coefficient is 030 and the
in a certain compound microscope the object is 90 mm from the objective the lenses are 265 mm apart and the
a harmonic wave travels in a wire with amplitude 254 mmwavelength 134 m and frequency 487 hz what is the speed with
a 75 g arrow is fired from a bow whosestring exerts an average force of 95 n on the arrow over a distanceof 76 cm what
iron atoms have been detected in the suns outer atmosphere somewith many of their electrons stripped away what is the
on a frictionless horizontal surface a 150 kg mass traveling at350 ms collides with and sticks to a 300 kg mass that
05 kg mass is exhibitingcounterclockwise ucm on level fric free table top at the end ofthe string whihc is held in