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a horizontal spring with spring constant 140 is compressed 20 and used to launch a 26 box across a friction less
a particle lives for a little time before breaking apart into other particles assume it is moving at a speed of 0984c
a ladder of weight 200 n and length 10 meters leans against a smooth friction less wall a fire fighter of weight 600 n
a motorcycle accelerates uniformly from rest and reaches a linear speed of 286 ms in a time of 119 s the radius of each
the x -component of the velocity of an object vibrating along the x - axis obeys the equation vxt 0445 ms sin 254radst
a meter stick is freely pivoted about the 20 cm mark find the frequency of small amplitude
if we assume that an electron is orbiting a proton just like the moon orbits the earth determine the electron orbital
a 0335 m string is clamped at both ends if the lowest standing wave frequency in the string is 326 hz evaluate what is
a 10- kg uniform ladder 50 m long is placed against a smooth wall at a height of 31 m the base of the ladder rests on a
one of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 hz and the next
a 60 kg block slides along a frictionless horizontal ground at a velocity of 7 ms after sliding for 20 m the block
you want to design a helium-filled balloon that will lift a whole payload of 1350 kg find what volume of helium is
a uniform solid disk of mass 297 kg and radius 0200 m rotates about a fixed axis perpendicular to its facea if the
a suitcase full of platinum sits at the bottom of a lake a recovery diver finds that as he lifts the suitcase to the
the depth of the potential well for free electrons in a metal can be accurately determined by observing that the
calculate the smallest number of whole logs density p 725kgm3 radius 00800 m length 300 m that can be used to create
a penny is placed at the outer edge of a disk radius is 0147 m that rotates about an axis perpendicular to the plane of
for this aircraft each wing has an area of 24 m2 when the plane is traveling at normal speed the speed of the wind
a 300 kg boat is initially moving at a constant velocitysuddenly the boat feels a force due to the wind which is
a person exerts a horizontal force of 190 n in the test apparatus shown in the figure find the horizontal force that
a hiker who weighs 916 n is strolling through the woods and crosses a small horizontal bridge the bridge is uniform
under the influence of its drive force a snowmobile is movingat a constant velocity along a horizontal patch of snow
calculate the fluid force in newtons on a square plate with aside of 2 m that is submerged at ahorizontal angle of
a top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top the
the psychodynamic theory for this essay first provide a detailed description of the structures of personality id ego