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a tether ball moves around the pole in a horizontal circle with radius 15m if the mass of the ball is 13 kg and the
a saw blade goes from rest to 3500 rpm in 30s through how many radians does the blade turn while reaching 3500
in a double-star system two stars of mass 60 1030 kg eachrotate about the systems center of mass at a radius of 20
a snowboarder hits end of jump at speed of 140 ms the boarder is traveling at 13 mis at highest point of jump determine
in a simplified model of the human eye the aqueous and vitreous humors and the lens all have a refractive index of 140
when at rest two trains have sirens that emit a frequency of 300hz the trains travel toward one another and toward an
common light bulbs are designed for use with120 v and are rated by the power dissipated as heat and lighta what is the
in 1911 rutherford discovered the nucleus of an atom by observing the scattering of helium nuclei from gold nuclei if a
a two-stage rocket accelerates from rest at 327 ms2 for 682seconds it then accelerates at 298 ms2 for another
a system consists of two positive point charges q1 and q2gtq1 the total charge of the system is 620 muc and each charge
a violent rainstorm dumps 09 cm of rainon a city 3 km wide and 6 km long in a 2 h period how many metric tons 1 ton 103
long straight wire a long straight wire has fixednegative charge with a linear charge density of -31 ncm the wire is to
find the distancein mum between theplates of a parallel plate capacitor if in the dielectriccompletely filling that
a proton is located at the origin and a second proton is locatedon the x-axis at x 512 fm 1 fm 10-15 ma calculate the
the 148cm3 volume betweenthe plates of a 111 pf parallel-plate capacitor is filled with adielectric the area of each
observer o fires a light beam in the y directionvy c use lorentz velocity transformation tofind vy and vx and show
the earth has a vertical electric field with a magnitude of approximately 100 vm near its surface what is the
a crane on a dock lifts an 1107kg container 28m swings it out over the deck of a freighter and lowers the container
on an essentially frictionless ice rink a skater moves at 3 ms they encounter a rough patch of ice with friction that
in a typical living cell the electric potential inside thecell is 0070 v lower than the electric potential outside the
a baseball of a mass 0173kg is thrown from the roof of a building 308m above the ground with a initial velocity of
a 1 kg object is released from rest at an unknown height h above the ground what is the initial height if it hits the
a car makes a trip due north for three-fourths of the time and duesouth one-fourth of the time the average northward
a 1500 kg car is traveling with a velocity of 3 ms how much work must be done on this car to bring it to a complete
a disk with a rotational inertia of 644 kgmiddotm2 rotates like a merry-go-round while undergoing a torque given by