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two identical particles move under the influence of a central force for which the potential energy function is vr k r
a circular saw blade 0180m in diameter starts from rest in 500s it reaches an angular velocity of 120 rads with
a projectile is right at the edge of a 85 meter tall building it is then fired with an initial speed of 25ms at an
a small rock with mass 012 is fastened to a massless string with length 080 to form a pendulum the pendulum is swinging
a fly wheel turns through 30 rev1 rev2pie rad as its slows from an angular speed of 6 rads to a stopa assuming a
a size-5 soccer ball of diameter 226cm and mass 426g rolls up a hill without slipping reaching a maximum height of 500
an electron with mass 911times10-31 kg moves with a speed of 200times106 ms in a circle of 283 cm radius under the
a baseball is thrown from the roof of 211 m-tall building with an initial velocity of magnitude 116 ms and directed at
in one day a 75 kg mountain climber ascends from the 1400 m level on a vertical cliff to the top at 2380 m the next
an average emf of 32 v is induced in a circuit in which the current drops from 10 to 2 a in 01 s what is the inductance
a rifle with a weight of 40 n fires a 45-g bullet with a speed of 230 msa find the recoil speed of the rifleb if a
a railroad car of mass 25 104 kg moving at 350 ms collides and couples with two coupled railroad cars each of the same
calculate the voltage of an equipotential line between the plates of a capacitor if the distance of the line to the
a 0365-kg blue bead slides on a frictionless curved wire starting from rest at point circle a in the figure below where
if a horse starts from rest and accelerates at the maximum value until reaching its top speed how far does it run to
two blocks slide on a horizontal frictionless surface with two springs on opposite sides block a has mass 114 kg and
a 826 kg crate slides on a horizontal surface the coefficient of kinetic friction between the surface and the crate is
a meter stick and a two-meter stick have the same thicknesses and density they are both placed upright and balancing on
europa a moon of jupiter has an orbital radius of 670 x108 m and a period of 355 days what is the mass of jupiter 1 day
a 40-kg bucket of bait attached to the end of a 75 m string is whirled around in a circular horizontal path if the
if mars orbital period is time for one orbit around the sun is 1886 earth years and the center of mars is 2279 x 1011 m
a ball with a mass of 10g is swung in a horizontal circular path on a string of length 05m if the balls speed is 45msa
a lantern slides down a driveway with an incline of 37 deg if the coefficient of kinetic friction is 20 what is the
when a beam of white light is incident vertically on a thin oil slick n 125 floating on water the only enhanced bright
starting from rest a 40-kg crate of cell phones reaches a horizontal speed of 80 ms in 20 s what is the net force