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astronauts on the moon set up a simple pendulum of the length 1 m and measured its period to be 493 s what is the
what is the ph of a solution of 075 m k2hpo4 potassium hydrogen phosphate phosphoric acid h3po4 has the following
on the apollo 14 mission to the moon astronaut alan shepard hit agojf ball with a 26 iron the acceleration due to
cyanogen is a gas which contains 462 c and 538 n by mass at a temperature of 25c and a pressure of 750 mm hg 150 g of
the concentration of copperii sulfate in one brand of soluble plant fertilizer is 0070 by weight if a 150 g sample of
a peregrine falcon in a tight circular turn can attain a centripetal acceleration 161 times the free-fall acceleration
r enantiomer of a chiral compound has a specific rotationof 152if a mixture of this coumpound and its enantiomer has a
a ball thrown horizontally at 2472 ms travels a horizontal distanceof 4951 m before hitting the ground from what height
zinc copper lead and mercury ions are toxic to atlantic salmon at concentrations of 642 x 10-2mm 716 x10-3mm 0965 mm
a supply plane needs to drop a package of food to scientists working on a glacier in greenland the plane flies 246 m
a generator uses a coil that has 160 turnsand a 050-t magnetic field the frequencyof this generator is 600 hz and its
calculate the molar concentration of propionic acid hc3h5o2 in solution if 1000 ml of a propionic acid solution is
you are designing a lathe motor part of which consists of auniform cylinder whose mass is 90 kg and whose radius is 040
human tissue contains about 3middot1027 electrons perkg of material suppose two humans are located 1960 km apart
calculate the ph of the following solution a solution prepared by mixing 1000 ml of 0500 m acetic acid with 0353 g of
a chemical reaction took place inside of a coffee cup calorimeter the 700g of 25 degrees c water cooled to 175 degrees
a subatomic particle called a muon has a mass 207 times that of an electron and a charge equal to an electron charge in
a 1585mg sample of pure copper is dissolved in a small amount of nitric acid giving copperii ions in solution this
a synchronous turbo generator is otating at 1800rpm has acylindrical rotorthe rotor is the rotating component of the
how does one determine the number of stereoisomers and constitutional isomers that are produced in reaction a molecule
what is the total mass of the earths atmosphere the radius of the earth is 637x106m and atmosphere pressure at the
in a television set electrons are accelerated from rest through apotential difference of 20 kv the electrons then pass
for each of the following orbitals provide a perspective sketch of the orbital in the cartesian x y z coordinate system
an astronaut on jupiter drops a rockstraight downward from a height of 120 mif the acceleration of gravity on jupiteris
a 1172kg car traveling to thewest slows down uniformly from 200ms to 50msa how long does it take the car to decelerate