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carbon monoxide co detectors sound alarm when peak levels of carbon monoxide reach 100 ppm this level roughly
a series rlc circuit consists of a 90ohm resistor a 020h inductor and a 105mf capacitor it is attached to a 120v60hz
the fan blades on a jet engine make one thousand revolutions in a time of 765 msa determine the period in secondssb
treating the atom as a cube and assuming no empty space in the solid estimate the length in a of an atom of b in
a steel piano wire of length 0650 m and mass 580 g is stretched under a tension of 4600 n what is the speed of
an empty erlenmeyer flask weighs 2151 grams when filled with water d equals 100 grams over cm cubed the flask and its
the height of a cylindrical container is 2951 cm and the diameter is 2050 cm how many gallons of water can this
block a of mass 40 kg is on a horizontal frictionless tabletop and is placed against a spring of negligible mass and
find the absolute pressure kpa if the gage pressure is 30 psig when the barometer reads 698 mm
a 130 kg mass on a spring oscillates horizontally with little friction according to the following equation
a particle has a position vector given by r 12ti 60t-25t2j where r is in meters and t is in seconds find the
the polar ice caps contain about 23times1019 kg of ice this mass contributes negligibly to the moment of inertia of
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