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a 410-kg child swings in a swing supported by two chains each 308 m long the tension in each chain at the lowest point
a proton accelerates from rest in a uniform electric field of 600 nc at one later moment its speed is 150 mms
in a veeertical jump and reach test a 60 kkg ssstudent jumps 60cm while a 90 kg student jumps 45 cm assumming both
a baseball is hit so that it travels straight upward after being struck by the bat a fan observes that it takes 290 s
a bicyclist rides 301 km due east while the resistive force from the air has a magnitude of 771 n and points due west
a person pushes a 123-kg shopping cart at a constant velocity for a distance of 165 m on a flat horizontal surface she
a block of mass 20kg is sliding down an incline plane with no friction the plane makes an 30 degree angle theta with
a cyclist is coasting at a steady speed of 16ms but enters a muddy stretch where the effective coefficient of friction
a 6-mu or micro f capacitor is charged to 120 v and is then connected across a 700-ohm resistorwhat is the initial
a motorcycle has a constant speed of 277 ms as it passes over the top of a hill whose radius of curvature is 168 m the
the electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 16 x
an inductor carries a current of 25 a and the magnetic energy stored in the inductor is 0035 j what is the
a simple pendulum has a mass of 0650 kg and a length of 200 m it is displaced through and angle of 70 degrees and then
a child in a swing starts from rest while pulled back at an angle of 30 degrees from vertical the swing is released and
a 64-kg runner rounds a circular track of radius 637 m at a constant 530 ms find the magnitude of her momentum changes
a block slides down a frictionless ramp of height 037 meters at the bottom it reaches a horizontal plane the
a series rlc circuit consists of a 49-ohm resistor and a 50-uf capacitor the ac voltage source operates at 600 h if the
youre using a rope to pull a sled at constant velocity across level snowwith coefficient of kinetic friction 0050
1an observer fails to check the bubble and it is off two divisions on a 250 ft sight what error results for a
when cl2 gas is added to water during disinfection ofwater it hydrolyzes with water to form hocl the power of acidhocl
sodium bicarbonate and sodium carbonate dissolved in water use to make buffer solution the ka value of carbonic acid is
what mass of pbso4 forms when 125l of 00500m pbno32 and 200l of 00250m naso4 are
describe the preparation of 15l of a 010m cac2h3o22 solutionhow many milliliters of the above solution would be needed
identify which element is oxidized and which element is reduced in the following 4nacl 2h2so4 mno2 agrave 2na2so4
the following solutions were combined280ml of 0250m hno3 530ml of 0320m kohwhat is the concentration of h or oh- ions