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what is required to do work do all forces do work explaina what are the units of workb show that in terms of
an asteroid in an elliptical orbit about the sun travels at 12 x 106 ms at perihelion the point of closest approach at
a comet goes around the sun in an elliptical orbit at its farthest point 600 million miles from the sun it is traveling
suppose that for the couple in fig 326 you were told that the girls mass was three-fourths that of the boy what would
two ice skaters stand together as illustrated in fig 326 they push off and travel directly away from each other the boy
calculate the linear momentum of a pickup truck that has a mass of 1000 kg and is traveling eastward at 20 ms a small
a childs cubic play block has a mass of 120 g and sides of 500 cm when placed in a bath tub full of water will the cube
suppose an astronaut has landed on mars fully equipped the astronaut has a mass of 125 kg and when the astronaut gets
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how would the force of gravity between two masses be affected if the separation distance between them were a doubled
two 30 kg physical science textbooks on a bookshelf are 015 m apart what is the magnitude of the gravitational
a what is the weight in new tons of a 120 lb personb what is your weight in new tonswhat is the weight in new tons of a
what is the weight in new tons of a 60 kg package of nails what is the force in new tons acting on a 40 kg package of
a 1000 kg automobile is pulled by a horizontal tow line with a net force of 950 n what is the acceleration of the auto
determine the net force necessary to give an object with a mass of 30 kg an acceleration of 50 ms2a force of 21 n is
a horizontal force of 250 n is applied to a stationary wooden box in one direction and a 600 n horizontal force is
what is the net force of a 50 n force and an 80 n force acting on an object for each of the following conditionsa the
some factory workers are paid by the hour others may be paid on a piecework basis paid according to the number of
a fellow student tells you that she has both zero kinetic energy and zero potential energy is this possible explain
what are two examples of alternative energy sources what are two examples of renewable energy sources which two
which fuel is consumed the most in the united states which fuel is used the most in the generation of electricity on
what does a greater power rating mean in terms ofa the amount of work that can be done in a given time andb how fast a
a what is the si unit of powerb show that in terms of fundamental units the units of power are
is the mechanical energy of an object in free-fall conserved explain persons a and b do the same job but b takes longer
a mass suspended on a spring is pulled down and released it oscillates up and down as illustrated in fig 423 assuming