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a man leaps from the top of a 60 meter tall building if his initial speed is 24 ms and at an angle of 23 degrees above
if 281713 g of unknown was added to 8596 g of phenol to prepare the solution calculate the molar mass mm of the
the question is do you need to convert volts into something else when using it in the equation of planks constant x
laser light of wavelength 635 nm is incident upon two narrow slits separated by 14 mm on a screen 41 m beyond the slits
a 10cm3 sample of lead and a 10cm3 of glass i drop each in a separate beaker of water how do the volumes of water that
when responding to sound the human eardrum vibrates about its equilibrium position suppose an eardrum is vibrating with
when aluminum crystallizes it forms a face-centered cubic cell the atomic radius of an al atom is 143pm calculate the
two trains on separate tracks move toward one another train 1 has a speed of 130kmhr and train 2 has a speed of 90kmhr
the monoterpenoid rose oxide systematic name tetrahydro-4-methyl-2-2-methylpropenyl-2h-pyran or iupac name
two people are pulling a boat through the water as in the figure below each exerts a force of 600 n directed at a
a stationary observer hears 5976 hz change to 4478 hz as a source of constant frequency passes at constant speed
describe a carbon nanotube and the physical properties of a nanotube compared to the other allotypes of carbon what are
if the observer knows hisher speed is 250 ms and the temperature is 30degc and hears a frequency of 4500 hz what is the
given an aqueous solution that is 20 nh4cl calculate the molality use the molar mass of nh4cl to help determine the
an x-ray photon is scattered from a free electron mass m at rest the wavelength of the scattered photon is and the
what mass of ethylene glycol must be added to 8467 grams of qater to increase the boiling point to 10105
in the figure below m1 95 kg and m2 40 kg the coefficient of static friction between m1 and the horizontal surface is
how many milliliters of 5 m nacl are required to prepare 1500 ml of 0002 m nacl what will be the concentration of the
a sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment the results from
a 70 kg object undergoes an acceleration of 25 ms2a what is the magnitude of the resultant force acting on it nb if
exposure to high doses of microwaves can cause damage estimate how many photons with a wavelength 12cm must be absorbed
the handle of a grinding wheel goes around a circle with a circumference of 12m if it requires a force of 120n to turn
the average person burns 12000 kj of food energy per day2800000 cal if the heat of combustion of sugar is 4000 calg and
you need to prepare 20ml of a drug dilution of 50mgml from a stock solution of 2g5ml how many mls of diluent will be
assume your eyes receive a signal consisting of blue light the wavelength 470nm the energy of the signal is 250x10-14 j