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a car is traveling at a speed of 380 ms on an interstate highway where the speed limit is 750 mihr is the driver
a test rocket is fired vertically upward from a well a catapult gives it an initial speed of 792 ms at ground level its
the driver of a car slams on the brakes when he sees a tree blocking the road the car slows with a constant
the height of a helicopter above the ground is given by h 310t3 where h is in meters and t is in seconds after 200 s
a physics professor equipped with a rocket backpack steps out of a helicopter at an altitude of 617 m with zero initial
a proton accelerates from rest in a uniform electric eld of 677 nc at some later time its speed is 94 times 10 5 ms
a long thin rod length 50 m lies along the x axis with its midpoint at the origin in a vacuum a 60c point charge is
you are working in a shoe test lab measuring the coefficient of friction for tennis shoes on a variety of surfaces the
a small plastic ball of mass 527 x 10-3 kg and charge 0118c is suspended from an insulating thread and hangs between
a small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a
the drawing shows two situations in which charges are placed on the x and y axes they are all located at the same
the velocity of a particle is vtk 0 less than or equallt t lt infinity x0ca write the corresponding equation for
multiple-concept example 3 provides some pertinent background for this problem suppose a single electron orbits about a
the coefficient of static friction between the sole of an athletic shoe and the basketball court floor is 067 ken wears
a plate carries a charge of -4 c while a rod carries a charge of 250 c how many electrons must be transferred from the
a tortoise can run with a speed of 010ms and a hare can run 20 times as fast in a race they both start at the same time
the coeffiecient of static friction between jimmys hand and his tennis racket is 045 how hard must he squeeze the
a motorist drives north for 35 minutes at 85 kmh and then stops for 15 minutes he then continues north traveling 130km
a bicyclist starts from rest at the top of a 20-m hill and rolls down it without pedaling assuming ideal conditions no
the masses of the earth and moon are 598 times 1024 and 735 times 1022 kg respectively identical amounts of charge are
two charges of equal magnitude exert an attractive force of 75times10-4 n on each other if the magnitude of each charge
two identically charged particles separated by a distance of 57 m repel each other with a force of 89 n what is the
a very small charged block with a mass of 210 g is placed on an insulated frictionless plane inclined at an angle of
four identical metallic objects carry the following charges 118 689 -492 and -956c the objects are brought
iron atoms have been detected in the suns atmosphere some with many of their electrons stripped away what is the net