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a thin flake of mica n 158 is used to cover one slit ofa double-slit interference arrangement the central point on
in a 1-l beaker 203 ml of 0307m ammonium chromate was mixed with 137ml of 0269m chromiumiii nitrite to produce ammonium
an electron in a television picture tube travels at 3 x107 ms and is acted on both by gravity and by theearths magnetic
if a simple pendulum with length 13 m makes 88oscillations in 180 s what is the acceleration of gravity at its
a hypothetical element has a bcc crystal structure an atomic radius of 0149 nm and an atomic weight of 9603 gmol what
the content of manganese in steel was found using atomic absorption and the method of standard additions a standard
a recording engineer works in a soundproofed room that is385 db quieter than the outside ifthe sound intensity in the
suppose the original sample is unknowingly contaminated with a second anhydrous salt will the reported percent water in
for a wavelength of 420nm a diffraction grating produces a bright fringe at an angle of26deg for an unknown wavelength
write an equation for the process that corresponds to the electron affinity of the mg ion express your answer as a
an electron and a positron each have a mass of 911 x 10-31kg they collide and both vanish with only
the crucible is handled with oily fingers after its mass measurement the oil from the fingers is burned off will the
when you look down into a swimming pool or lake are youlikely to underestimate or overestimate its depth explain how
given the following equation how many grams of pbco3 will dissolve exactly when 15l of 100 m h is added to 500g of
a string of length 26 m is fixedat both ends when the string vibrates at a frequency of840 hz a standing wave with6
a 20 -kg lead sphere is hanging from a hook by a thin wire35m long and is free to swing in a complete cirle suddenly it
while looking at her image in a cosmeticmirror dina notes that her face is highly magnified when she isclose to the
the wavelength of yellow sodium light in air is 589 nma what is its frequencyhzb what is its wavelength in glass whose
the fired crucible is handled with oily fingers before its mass measurements subsequently the sample is heat and the
a machine shop has 129 equally noisy machines that togetherproduce an intensity level of 90 db if the intensity level
draw structural formulas and complete write the names under the products and indicate the major one show the reaction
a diverging lens f -100 cmis located 210 cm to the left of aconverging lens f 300 cm a268-cm tall object stands to
a thin film of alcohol n136 lies on a flat glass platen151 when monochromatic light whose wavelength can bechanged is
suppose that the proper half life of a certain type of particle is 18mus these particles are produced at one end of a
in visible spectroscopy we place a sample in a source and observe transmittance if we observe 420nm absorbed by the