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a child wishes to determine the speed a slingshot imparts to a rock how can this be done using only a meter stick a
a certain type of automobile can accelerate approximately as shown in the velocity time graph of fig 2-35 the short
a car traveling 85 kmh strikes a tree the front end of the car compresses and the driver comes to rest after traveling
a car moving at 95 kmh passes a 100-km long train travelling in the same direction on a track that is parallel to the
a car is behind a truck going 25 ms on the highway the cars driver looks for an opportunity to pass guessing that his
a boat whose speed in still water is 170 ms must cross a 260-m-wide river and arrive at a point 110m upstream from
a block of mass m is held motionless on a frictionless plane of mass m and angle of inclination see fig the plane
a bicyclist in the tour de france crests a mountain pass as he moves at 18kmh at the bottom 40 km farther his speed is
you purchase a rectangular piece of metal that has clemencies 50 x 150 x 300 nun and mass 00158 kg the seller tells you
you drill a small hole in the side of a vertical cylindrical water tank that is standing on the ground with its top
you are designing a diving bell to withstand the pressure of seawater at a depth of 250 ma what is the gauge pressure
when a pilot takes a tight turn at high speed in a modern fighter airplane the blood pressure at the brain level
what must be the contact area between a suction cup completely exhausted and a ceiling if the cup is to support the
what is the lift in newtons due to bernoullis principle on a wing of area 78m2 if the air passes over the top and
what is the difference in blood pressure mm-hg between the top of the head and bottom of the feet of a 160-m-tall
what gauge pressure must a machine produce in order to suck mud of density 1800 kgm3 up a tube by a height of 15
two very large open tanks a and f fig 1444 certain the same liquid a horizontal pipe bcd having a constriction at c and
two drinking glasses having equal weights but different shapes and different cross-sectional areas are filled to the
the upper edge of a gate in a dam runs along the water surface the gate is 200 m high and 400 m wide and is hinged
the maximum depth dmax that a diver can snorkel is set by the density of the water and the fact that human lungs can
the human brain and spinal cord are immersed in the cerebrospinal fluid the fluid is normally continuous between the
the great molasses flood on the afternoon of january 15 1919 an unusually warm day in boston a 274-m-high
the densities of air helium and hydrogen at p 10 atm and t 20degc are 120 kgm 0166 kgm and 00899 kgm respectivelya
the deepest point known in any of the earths oceans is in the marianas trench 1092 kd deepa assuming water is
the bends during flight anyone who scuba dives is advised not to fly within the next 24 h because the air mixture for