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a person sees clearly wearing eyeglasses that have a power of -254 diopters and sit 15 cm in front of the eyes if the
the distortion of earths crustal plates is an example of shear on a large scale a particular crustal rock has a shear
what would happen if a pressed polystyrene top was used to cover the polystyrene cup after the acid and base solutions
bone has a youngs modulus of about 180 1010 pa under compression it can withstand a stress of about 155 108 pa before
how are the neutral particles removed from the mass spectrometer what is the reason for removing neutral particles from
a person is making homemade ice cream she exerts a force of magnitude 16 n on the free end of the crank handle and this
a 200g ball is tied to a 10 meter long string and released from rest 60 degree angle it swings down and at the very
a 250ml aliquot of an aqueous quinine solution was diluted to 50 ml and found to have an absorbance of 0832at 348nm
if you were to use a column one half the length of the one you actually used how do you think the retention times of
two carts of unequal mass massagtmassb move on parallel firctionless horizontal tracks both carts start from rest and
a 0276-g sample of a caco3 heterogeneous mixture was placed into a gas generator the total mass of which is 87719g
a 10 g steel marble is spun so that it rolls at 150 rpm around the inside of a vertically oriented steel tube the tube
a 30-kg 14-cm-radius cylinder initially at rest is free to rotate about the axis of the cylinder a rope of negligible
why does the negative potential superimposed with an ac current allow low mass particles to pass through the quadrupole
why does the positive potential superimposed with an ac current allow high mass particles to pass through the
a single crystal of silver with critical resolved shear stress of 80 mpa is oriented such that tension is applied along
a double cheeseburger has a caloric content of 440 cal 1cal 1000 cal if this energy could be used to operate a
the normal boiling point of ch3oh is 647c and its molar enthalpy of vaporization is deltah718kjmol calculate the value
calculate the change in entropy when 25 g of ethanol at 50oc is poured into 70 g of ethanol at 10oc in an insulated
how are the daughter ions or fragments formed in mass spectrometry and why are these fragments helpful in identifying
a system contracts from an initial volume of 150 l to a final volume of 100 l under a constant external pressure of
what problems might we see if we increase the energy of the electron beam and if we reduce the energy of the electron
the enthalpy of combustion for propane is -2044 kjmol how many liters of propane at stp must be burned in order to
what are the three basic steps in mass spectrometry also why are the analyte molecules
a 250 ml sample of 0150 m chloroacetic acid is titrated with a 0150 m naoh solution what is the ph at the equivalence