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a group of college students eager to get to florida on a spring break drove the 795-mi trip with only minimum stops
a boy in a wheelchair total mass 510 kg has speed 140 ms at the crest of a slope 240 m high and 124 m long at the
if i have a bar of length 2d that is supported on a peg at a distance 32d from the left end of the bar and i place a
a ball of mass 150 kg is dropped from rest from a height of 125m it rebounds from the floor to reach a height of 125 m
two forces are applied to a car in an effort to move it as shown in the following figure where f1 446 n and f2 399 n
suppose a satellite is in a circular orbit 3425 earth radii above the surface of the earth 4425 earth radii from the
a rectangular container measuring 32 cm 39 cm 62 cm is filled with water what is the mass of this volume of water in
an asteroid in an elliptical orbit about the sun travels at 13 106 ms at perihelion the point of closest approach at a
a football is kicked such that is has an initial velocity of 30 ms at an angle of 60 degrees above the ground how would
a boy pulls due east with a force of 200 n on a box a girl pulls due south with a force of 400 n what is the magnitude
a 2 kg projectile is shot straight up with initial velocity v0 50 ms g98 ms2 finda initial kinetic energyb maximum
a 120kg horizontal flywheel with a 05m radius rotates friction-free about an axis through its center a rope is wrapped
supercapacitors with capacitances of 1 f or more are made with plates that have a spongelike structure with a very
a metal ball with a mass of 323middot10-6 kg and a charge of 447 mc has a kinetic energy of 755middot108 j it is
a ball with a radius of 10cm falls through the air toward the ground its drag coefficient is 06 and the density of air
a 536-kg skateboarder starts out with a speed of 249 ms he does 114 j of work on himself by pushing with his feet
two balls a and b are thrown from the top of a vertical cliff ball a is thrown horizontally reaching the ground in 35 s
a child sits 175 m from the center of a rotating merry-go-round that makes one complete revolution spin in 258 secondsa
a spaceship of mass 230times106kg is cruising at a speed of 430times106ms when the antimatter reactor fails blowing the
a proton moves perpendicular to a uniform magnetic field at a speed of 200 107 ms and experiences an acceleration of
the displacement vectors 470 cm at 150deg and 230 cm at 600deg both start from the origin and form two sides of a
if the transformer is connected the wrong way around the circuit what voltage is supplied to the
a block of mass 10 kg rests on a horizontal surface the coefficient of sliding friction is 01 a massless horizontal
a child slides down a snow-covered slope on a sled at the top of the hill her mother gives her a push at a speed of 15
a 65-g ice cube at 0degc is placed in 874 g of water at 23degc what is the final temperature of the mixture in