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a spring is hung from the ceiling a 0375 -kg block is then attached to the free end of the spring when released from
a vertical spring spring constant 120 nm is mounted on the floor a 0430-kg block is placed on top of the spring and
a spring stretches by 00157 m when a 322-kg object is suspended from its end how much mass should be attached to this
a string is wrapped around a pulley with a radius of 20cm the pulley is initally at rest a constant force of 50n is
television stations broadcast in vhf and uhf vhf is very high frequency the vhf bands for digital broadcast lie within
a child tries to swing an adult size baseball bat without choking up on it she can manage only 180 degs of angular
a wheel starts at rest and takes 300 s to rotate 370 revolutions at which point its angular velocity is 980 rads what
a 0091 kg solid cylinder with a radius of 174 cm is placed at the top of a 30ordm inclined plane of height 661 cm if
a student sits on a rotating stool holding two 700 kg objects when his arms are extended horizontally the objects are
the eyepiece of a refracting astronomical telescope has a focal length of 9cm the distance between objective and
a hoop and a disk both of mass 2 kg and radius of 03 m roll without slipping up a straight incline with an initial
the ceiling of a classroom is 375m above the floor a student tosses an apple vertically upward releasing it 05m above
a village maintains a large tank with an open top containing water for emergencies the water can drain from the tank
rail guns can accelerate an object by using the magnetic force on a current carrying device a rail gun is constructed
the golden gate bridge in san francisco has a main span of length 128km one of the longest in the world imagine that a
the polarizing angle for light in air incident on a glass plate is 572 what is the index of refraction of the
a 900 kg fullback running east with a speed of 500 ms is tackled by a 950 kg opponent running north with a speed of 300
a 550cm long brass rod has a diameter of 300cm what compression force will break this rod what tension force will break
a 45times106kg spaceship moves away from earth with a speed of 078c 1 what is the magnitude of the ships classical
a spacecraft has a nonrelativistic or classical momentum whose magnitude is 18times1014 kgmiddotms the spacecraft moves
a 18-kg block slides down a fixed rough curved track the block has a speed of 50 ms after its height above a horizontal
a pendulum is made by letting a 20-kg object swing at the end of a string that has length of 20 m the maximum angle the
on an air track a 4025 g glider moving to the right at 195 ms collides elastically with a 5020 g glider moving in the
a 534kg object moving at a speed of 13ms in the postive x-axis collides wth a 320kg moving at 25ms in the opposite
a hungry 120 kg predator fish is coasting from west to east at 700 when it suddenly swallows a 120 kg fish swimming