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air streams horizontally past a small airplanes wings such that the speed is 630ms over the top surface and 530ms past
which of the following rate law best illustrates the kinetics of the reaction between hydrochloric acid and sodium
water is flowing in a pipe with a varying cross-sectional area and at all points the water completely fills the pipe at
you have a set of converging lenses with focal lengths 105 cm 145 cm 480 cm and 745 cma which two lenses would you
a reaction was found to be third order in a increasing the concentration of a by a factor of 3 will cause the reaction
a refracting telescope is used to view the moon diameter 3480 km distance from earth 385000 km the focal lengths of the
water is flowing in a cylindrical pipe of varying circular cross-sectional area and at all points the water completely
a microscope has an objective lens of focal length 675 mm the objective forms an image 164 cm from the lens the focal
a reaction was found to be second order in carbon monoxide concentration the rate of the reaction if the co is doubled
how is posible that an ionic compund have a positive and negative ions and still have a net charge of
if the rubber of the balloon itself has a mass of 200g and the balloon is filled with helium density 0166kgm3
a sample of ideal gas from a compressed gas cylinder goes from 230atm to 1atm with a concurrent change of volume
a hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake the
the element helium is thouhght to remain a liquid at absolute zero solid helium can be made only by exerting a pressure
a layer of oil with density 800 kgm3 floats on top of a volume of water with density 1000 kgm3 a block floats at the
dentists might use a mixture of 40 n2o and 60 o2 as an initial anesthetic of nitrous oxidealthough exact proprtions may
the eyepiece of a microscope has a focal length of 125 cm and the objective lens focal length is 126 cma if the tube
a refrigerator is the reverse of an engine work is performed to remove heat from a system making it colder the
a popular web site states that a 130 pound person will burn 472 calhr bicycling moderate effort and 649 calhr rock
estimate the fraction of electrons excited above the fermi level at room temp for aluminum the effective mass of al is
a suppose a certain large fish starts out at a depth where the absolute pressure is 21 atm and with gas bladder volume
the atomic mass of copper is 6355 amu given thatb there are two naturally occuring isotopes of copper 63cu and 65cu the
after the sun exhausts its nuclear fuel its ultimate fate will be to collapse to a white dwarf state in this state it
how much work is done by the moons gravitational field as a 1065 kg meteor comes in from outer space and impacts on the