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a large person sits on a four-legged chair with his feet off the floor the combined mass of the person and chair is 950
a 110 kg mass is attached to a light cord that is wrapped around a pulley of radius 730 cm which turns with negligible
an archeologist on a dig finds a fragment of an ancient basket woven from grass later it is evaluated that the
the coefficient of static friction between a rope and the table onwhich it rests is mu rmsfind the fraction of the rope
a component with 19 omega resistor is rated for use at power levels not exceeding 11 w find how much current safely
a sample of an unknown material appears to weigh 260 n in air and 200 n when immersed in alcohol of specific gravity
a plastic sphere floats in water with 350 percent of its volume submerged this same sphere floats in an unknown fluid
a 500 turn solenoid with a length of 20 cmand a radius of 20 cm carries a currentof 20 a a second coil of four turns
a spherical aluminum ball of mass 156kg contains an empty spherical cavity that is concentric with the ball the ball
stephen is pushing his sister joyce in a wheel barrow when its stopped by a brick 783 cm high the handles make an angle
an object at rest on a flat horizontal surface explodes into two fragments one 5 times heavier than the other the
a 30 resistor and a second resistor are connected in seriesacross a 250 v battery a current of 40 a flows through the
a vertical spring with force constant k of 300 nm is compressed006 meters and a 025 kg ball located on top the spring
a 05 kg mass is located on the end of a vertical spring that has a spring constant k of 75 nm and eased down into its
two identical cylindrical vessels with their bases at the similar level each contain a liquid of density 0991 gcm3 the
a pump lifts 200kg of water per hour a height of 5 meters find the minimum necessary power output rating of the water
in a model ac generator a 501 turn rectangular coil 100 cm by 23 cmrotates at 123 revmin in a uniformmagnetic field of
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