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a diver of mass 70kg jumps off a board 10m above the water if his downward motion is stopped 2 secs after he enters the
experiments have shown that for 12-dichloroethane clch2ch2cl in carbon tetrachloride solution at 25 degrees 70 of the
a television station broadcast on a frequency of 89 mhz whatis the wavelength of the electromagnetic wavem what is the
mgo can be formed by combustion of solid mgo write a reaction scheme for the process what operational sign must entropy
2 asteroids are traveling close to each other through thesolar system at a distance of 20x10 to the positive 10 rom
the combustion of methyl alcohol in an abundant excess of oxygen follows the equation 2ch3oh3o2 2co24h2o when 765g of
the k a of hypochlorous acid hclo is 300 x10-8 what is the ph at 250 degrees c of an aqueous solution that is 00200 m
an audio amplifier represented by the ac source and theresistor r delivers alternating voltages at audio frequencies
write systematic coupling patterns showing the relative chemical shifts observed for these alkyl groups explain your
if the humidity in a room of volume 685 m3 at 25degc is 40percent what mass of water can still evaporate from an
in which of these molecules does spin spin coupling occur if splitting does occur give the multiplicity of each kind of
the kinetic friction force between a 600-kg object and ahorizontal surface is 500 n if the initial speed of the object
1500 ml of 8000 moll solution of diprotic acid is mixed with 3000ml of 6000 moll naoh inside a coffee cup calorimeter
a weak base b forms the salt bhcl composed of the ions bh and cl- a 049 m solution of the salt has a ph of 454 what is
a ray of light incident upon a mirror makes an angle of 37degrees with the mirror what is the angle between the
unpolarized light passes through two polarized sheets theaxis of the first is vertical and that of the second is
when 10 mol of fe is consumed in the reaction 3fe 2o2 - fe3o4 how many mol of fe3o4 are
water at the top of niagara falls has a temperature of 10degrees celius if it falls 50 meters and all of its
a golf ball m 460 g is struckwith a force that makes an angle of 458deg with the horizontal the ball lands198 m away
warren broke his thermometer after determine the freezing point of the pure solvent he used a new thermometer to find
an 806 kgastronaut is working on the engines of his ship which is driftingthrough space with a constant velocity the
on planet tehar the freefall accelration is the same as that on earth but there is also a strong downward eletric field
a parallel-plate capacitor has circular plates of 610 cm radius and 110 mm separationa calculate the capacitanceb what
a distant galaxy emits light that has a wavelengthof 5007 nm on earth the wavelength of this light ismeasured to be
you have 25 ml of 05 m standard naoh solution density 103 gml at 20oc and copious quantitiesof distilled water explain