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nitrogen forms several oxides at stp what are the densities of no2 n2o4 and n2o5 how many volumes of oxygen are
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microwaves cook by emitting radiation with a frequency of 245x109s-1 calculate the number of photons required to raise
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what pressure difference must be generated along a vertical singe stage water pump tube to extract water from a well of
calculate the number of photons emitted in one second by a 15 w laser operating at a wavelength of 5400
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2010 nm ultraviolet light strikes a metal plate and ejects electrons having kinetic energy e 354 ev calculate the
the distance from the earth to the nearest stars is measured in light-years convert the distance 78 light-years to si
a tunable dye laser emits pulses of light at 4830 nm each having a total energy of 48e-6 j calculate the number of
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