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a goodyear blimp typically contains 6480 m3nbspof helium he at an absolute pressure of 110 x 105pa the temperature of
a runner weighs 515 n and 71 of this weight is water a how many moles of water are in the runners body b how many water
anbsp350nbspnbsp105nbspkg subway train is brought to a stop from a speed ofnbsp0500nbspms innbsp0500nbspm by a large
acalculate the force needed to bring a 950 kg car to rest from a speed of 850 kmh in a distance of 110 mbsuppose
suppose a car travels 108 km at a speed of 250 ms and uses 190 gallons of gasoline only 30 of the gasoline goes into
a bat at rest uses high frequency sound waves to see assume the sound waves have frequency of 40000hz and move with a
dolphins emit clicks of sound for communication and echolocation a marine biologist is monitoring a dolphin swimming in
a bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 hz the bird-watcher however
hearing damage may occur when a person is exposed to a sound intensity level of 900 db relative to the threshold of
two sources of sound are located on the x axis and each emits power uniformly in all directions there are no
a large tank is filled with methane gas at a concentration of 0770 kgm3 the valve of a 140-m pipe connecting the tank
a tube has a length of 0046 m and a cross-sectional area of 83 x 10-4 m2 the tube is filled with a solution of sucrose
compressed air can be pumped underground into huge caverns as a form of energy storage the volume of a cavern is 67
suppose a tank contains 816 m3nbspof neon ne at an absolute pressure of 101times105nbsppa the temperature is changed
if the cold temperature reservoir of a carnot engine is held at a constant 294 k what temperature should the hot
four moles of an ideal gas with a constant-volume molar specific heat of 260 j molmiddotk started out at a temperature
calculate the angle that will form between the centre maximum and the third-order dark fringe if the wavelength of the
twonbspmnbspnbsp06-kg masses are located at either end of anbsplnbspnbsp15-m long very light and rigid rod as in the
what would be the effect of replacing the polystyrene cup with a cup made of thin copper
can you please help me what would the hydrogen ion concentration be if the ph is 5 what would the hydroxide ion
according the the arrhenius theory which species does an acid produce in an aqueous solution hydroxide ions sodium ions
when the ph pf a solution changes from 5 to 3 the hydronium ion concentration is 001 of the original content 10 times
what is the name of the salt produced from the reaction of calcium hydroxide and sulfuric acid calcium sulfide calcium
consider this question what mass of a concentrated solution of nitric acid 680 hno3 by mass is needed to prepare 4000 g
how do i draw the lewis dot structure and show the brackets and their charge on lds for ionsfor aluminium io fluoride