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two forces act on a 5kg object one force is 40 n and directed east the other force is directed west the acceleration of
a laptop computer sits on the horizontal surface of the seat of a car moving at 80 ms the driver starts slowing down to
a copper alloy has a youngs modulus of 13 1011 pa and density of 940 103 kgm3 what is the speed of sound in a thin rod
a truck moving at 133 ms hits a concrete wall as a result of the collision a 6 kg wrench moves forward and strikes the
a satellite moves in a circular orbit around earth at a speed of 4714 msa determine the satellites altitude above the
a violin string is 33 cm long the wave speed is 140 msa what are the wavelengths of the first 3 harmonicsb what are the
the reaction time of the average automobile driver is about 07 s the reaction time is the interval between the
a stone is thrown with an initial speed of 12 ms at an angle of 30 degrees above the horizontal from the top edge of a
a 1000 kg sports car of mass accelerates from rest to 20 ms in 66 s what is the force exerted by the road on the
suppose your lab partner has a height l of 170 cm 5 ft 7 in and a weight w of 680 n 153 lb you can determine the
find the speed of an orbiter in a circular orbit that is just above the surface of a planet given that the orbiters
the earth orbits the sun in an approximately circular orbit of radius 1496 1011 m about 93 million miles in a period of
a find the speed of a satellite moving in a circular orbit just above the surface of the earth the earth has a radius
john weighs 716 n and marcia weighs 506 n estimate the gravitational force between them when they are 045 m
a mail bag with a mass of 120 is suspended by a vertical rope of length 800 a what horizontal force is necessary to
you melted a copper cylinder of volume 150 cm3 to fabricate a thin wire of diameter 002 mm what will be the length of
suppose a 317 kg child sits 138 m to the left of center on the same seesaw as the problem you just solved a second
three forces acting on an object are given by f1 205i 630j n f2 470i 195j n and f3 425 n the object experiences an
an electron is in a certain energy state in a one-dimensional infinite potential well from x 0 to x l 150 pm the
three electrons are placed at the vertexes of an equilateral triangle with side length of 51 nm a proton is placed at
an airplane is flying horizontally with a constant velocity of 180 ms at an altitude of 5400 m when it drops a packagea
a bullet with mass 488 g is fired horizontally into a 2106-kg block attached to a horizontal spring the spring has a
the giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its
a high fountain of water is in the center of a circular pool of water you walk the circumference of the pool and
a 7 kg 22 cm diameter turntable rotates at 500 rpm on frictionless bearings two 35 kg blocks fall from above hit the