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state the copper i content of a particular compound in copper i peroxide if its elementary copper i content is
a suction cup works by virtue of a vacuum that is build within the cup when the cup is pressed against a flat plane
in the new england the horizontal component of the earths magnetic field has a magnitude of 161e-5 t an electron is
a tank of water sits at the edge of a table of height 09 meter the tank springs a very small leak at its bottom and
an air duct in a building has a radius of 11 centimeter and a length of 16 meter find what pressure is required to push
after a animal or plant dies its 14c content decreases with a half-life of 5730 y if an archaeologist finds an ancient
a buffer solution of a weak base as well as its salt had a ph of 945 when the base was 0110 m and the cation was 200 m
a precious stone dealer wishes to obtain the specific heat capacity of a 0045 kilogram gem stone the specimen is heated
the current density in a 28 mum thick x 75 mum wide gold long film is 750000 am2 the current flows along the length of
compute the wavelength of the green line in the noticeable spectrum of excited h atoms using bohr
an object is placed 21 centimeter from a concave mirror of radius 91 centimetera determine the location of the imagecmb
find out the end final value of n in a hydrogen atom transition suppose the electron starts in n2 and absorbs a photon
the motor of a table saw is rotating 3450 revmin a pulley attached to the motor shaft drives a second puller of half
benzene a melts at 6 0c and diphenylmethanol b melts at 65 0c the solids are mutually immiscible there is a eutectic at
a diamond in air is illuminated with white light on one particular facet the angle of incidence is 3700 degree inside
a 100 meter long 200 n ladder rests against a wall frictionless the angle between the floor and the ladder is 622o a
the hydrogen gas is collected over water at 23 degrees c and on atmospheric pressure of 756 mm hg defines what would be
calculate the critical velocity above which the spinning of a fast symmetrical top around a vertical axis is
put 12 ml of feii into flask add 20 ml water to it add 1 ml of 9m h2so4 2drops mnso4 and 1 drop of 3 m h3po4 to the
an inductor used in a dc power supply has an inductance of 220 h and a resistance of150 omega it carries a current of
at a coal burning power plant a steam turbine is operated with a power output of 483 mw the thermal efficiency of the
in a large centrifuge used for training astronauts and pilots a small chamber is fixed at the end of a rigid arm that
suppose water boils at 277 c when the pressure is 6128kpa and at 329c when the pressure is 12688kpa contrast the
a carnot engine absorbs 465times103 joule from the hot reservoir and expels 312times103 joule to the cold reservoir
a block is connected between two springs on a frictionless horizontally level track the other end of each spring is