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an ore sample weighs 175 rm n in air when the sampleis suspended by a light cord and totally immersed in water
the rms speed of an oxygen molecule o2 in a containerof oxygen gas is 700 ms what is the temperature of the
a tank whose bottom is a mirror is filled with water to adepth of 204 cm a small fish floats motionless 660 cm under
a force f sqrt 3 i 1j n actson a wheel whose rotation axis coincides with the z axis the forceis applied at the point
a solid ball of mass m and radius r starts from rest and rollswithout slipping down a hill its center of mass drops a
a 150 kg bucket of water is suspended by a very light rope wrappedaround a solid uniform cylinder 0300 m in diameter
how did marie and pierrecurie measure the radioactivity of her pitchblende sampleshow did she deduce that there must be
there are two stable isotopes of the element lithium one of them has three neutrons and the other has four all other
a gas misture containing oxygen nitrogen and helium is trapped inside a vessel and exerts a total pressure of 925 torr
oil having a density of 931kgm3 floats on water a rectangular block of wood450 cm high and with a density of 960kgm3
an object 400 cm in front ofa certain lens is imaged 955 cmin front of that lens on the same side as the object i got
the original doppler effect expirament had a pair of sound sources- one on a moving train and one at rest on the train
which of the following pairs of molecules is listed in order of decreasing net dipole moment from more polar molecule
when in orbit a communication satellite attracts the earth with aforce of 190 kn and the earth-satellite gravitational
george and martha are at a nascar race and as the race car made theturn to their right and rushed towards them the
the molar heat capacity of silver is 2535jmol c how much energy would it take to raise the temperature of 970g of
a centripetal force of 250n acts on a 1000kg satellite moving with a speed of 5000ms in a circular orbit around a
an arrow is shot 30 degrees above horizontal with an initialvelocity of 49 metersseconda what is the maximum height the
the construction of a flat rectangular roof27 m x 46 m allows it to withstand a maximum net outward forceof 20008 n the
for each of the following reactions indicate which substance is oxidized and reduced which substance is the oxidizing
the following percentages of sulfate were found in a sample 3054 3034 3052 and 3105 find the mean the standard
a horizontal force of magnitude 310 npushes a block of mass 410 kg a distanceof 300 m across a floor where the
a small block sits on the top of a fixed frictionlesshemisphere of radius r 9 meters if the block is given ainitial
the born-haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal
assume that the earth is a uniform sphere and that its path around the sun is circulara calculate the kinetic energy