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three boxes rest side-by-side on a smooth horizontal floor their masses are 50 kg 30 kg and 20 kg with the 30-kg mass
explosive bolts separate a 840-kg communications satellite from its 560-kg booster rocket if the impulse of the
the loaded trailer has a mass of 900 kg with a center of mass at g and is attached at a to a rear bumper hitch if the
in the system the block of mass m1 is on a rough horizontal table the string that attaches it to the block of mass m2
1 a father pulls his young daughter on a sled with constant velocity on a level surface through a distance of 25 m the
a 14 kg crate starts at rest at the top of a 50 degrees incline the coefficients of friction are us038 and uk029 the
1someone shoots a gun while holding their arm stiffly outstretched in front of them and with the back of their shoulder
the fig shows a uniformly dense rectangular brick of length a height b resting on a rough inclined plane of angle
find a expression for the avg pressure exerted by n identical particles each of mass m traveling always at speed v on
question 1 referring to the system of the attached figure block a and b how much energy is required to move block a a
a fast-food restaurant wants a special container to hold coffee the restaurant wishes the container to quickly cool the
explain why newtons first law and the law of conversation of momentum are essentially saying the same thing in
if the coefficient of kinetic friction between a 120 kg crate and the floor is 30 what horizontal force is required to
assume newtons law of coolinga body cools from 60ordmc to 50ordmc in 15 minutes in air which is maintained at 30ordmc
question lets assume that a very very small drop of rain starts its way somewhere up in the sky with a mass of m0 and a
the mariana trench is located in the pacific ocean at a depth of about 11900 m below the surface of the water the
a rectangular slab 43m x 12m x 25m of slate rests on a 26 degree incline the density of the slab is 32 x 103 kgm3 the
a force of magnitude 100n is directed n and a second force of 200n 30 degrees east of north find the magnitude and
three forces 300n 500n and 600n respectively act of an angle of 120deg from each other find the resultant of this force
1 a body weighing 10 kg is on a horizontal plane the coefficient of static friction is 020a what horizontal force will
bull hydraulic pistonthe basic design of any hydraulic system is two connected fluid-filled cylinders of different
1 what force is required to drag a sack of rice weighing 105 lb if the coefficient of friction is 025a when the force
two soccer players start from rest 490 m apart they run directly toward each other both players accelerating the first
a stunt in which a clown fired out of a cannon and landed in a speeding toy fire engine which was racing away from him
car a is traveling at 180 ms and car b at 250 ms car a is 300 m behind car b when the driver of car a accelerates his