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mn was used as an internal standard for measuring fe by atomic absorption spectroscopy a standard mixture containing
1 in a common protein analysis a dye binds to the protein and the color of the dye changes from brown to blue the
the two stars in a binary star system have masses 22times1030 and 65times1030 they are separated by 21times1012 what
a hypothetical large slingshot is stretched 12 m to launch a 170 g projectile with speed sufficient to escape from
each of the three helicopter rotor blades shown in the figure is 520 m long and has a mass of 286 kg the rotor is
a 103 kg fullback runs at the line of scrimmage a constant force of 3399 n must be exerted on him to bring him to rest
an aluminum block slides along a horizontal surface the block has an initial speed of 110 ms and an initial temperature
a nacl solution contains 200 nacl by mass and has a density of 115 gml the molarity of the solution is hint assume 1000
a 125-kg crate slides along a horizontal frictionless surface at a constant speed of 40 ms the crate then slides down a
an organic compound was synthesized amp a sample of it was analyzed amp found to contain only c h n o amp cl it was
two metal plates are held together by two steel rivets each of diameter 024 cm and length 13 cm how much force must be
a river 1080 m wide flows toward the south at 356 mmin a girl on the west bank wishes to reach the east bank in the
a tennis player receives a shot with the ball 00600 kg traveling horizontally at 560 ms and returns the shot with the
if 020 moles of cacl2 is added to 20000 ml of a 050m nacl solution calculate the final concentration of cl- in the
a large beach ball weighs 560g when there is no air inside fully inflated it has a circumference of 252cm a estimate
a plane is headed due west with an air speed of 224 ms the wind blows south at 190 ms find the velocity of the plane
two blocks of equal massed are connected via a pulley system the mass of the pulley equals the mass of each block one
list the procedures to prepare 10000 ml of a 01m naoh solution from a 10 naoh solution mw of naoh4000 d of solution 10
object o1 is 147 cm to the left of a converging lens with a 108-cm focal length a second lens is positioned 100 cm to
a sphere of radius r and mass m is initially spinning about its center with a given angular velocity of omega the axis
a certain ship is shaped like a box with vertical sides and a flat bottom when the ship sails with cargo in the ocean
a screen is placed exactly one meter away from an illuminated test pattern a lens placed between them forms a clear
combustion of 651 mg of a compound yielded 2046 mg carbon dioxide and 836 mg of water at 100c and 760 torr pressure 100