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a uniform drawbridge must be held at a 37 angle above the horizontal to allow ships to pass underneath the drawbridge
a solid cube of iron density 787 gcm3 has a mass of 880 ga what is the resistance between opposite faces of the cube
consider the hypothetical reaction of a which could yield one or both of the two products b and c depending on reaction
a railroad car of mass252multiplied by104kg is moving with a speed of395ms it collides and couples with three other
draw the structure of an organic compound a that has the formula c7h12o and has peaks at 2950 cm-1 2750 cm-1 and 1745
in a certain series rlc circuit being driven at a frequency of 600 hz the maximum voltage across the inductor is 250
devise a chemical method for distinguishing between maleic and malonic acid i thought of bromination of maleic since it
electrons flow through a 22 mm diameter aluminum wire at 22 x 10-4 ms electron density of aluminum is 6 x 1028 m-3a how
a tennis player receives a shot with the ball 00600 kg traveling horizontally at600ms and returns the shot with the
which choice lists two health effects expected from the depletion of the ozone layer asthma lung cancer skin cancer
a ball of circumference 727 cm and mass 605 g is forced to the bottom of a swimming pool and then released after
how does one make 3-bromopropanol from propanol what are the reagents needed for this
a series rlc circuit is driven by an alternating source at a frequency of 410 hz and an emf amplitude of 900 v the
a 500-ml sample of a sulfuric acid solution of unknown concentration is titrated with a 01401 m sodium hydroxide
an airplane with a speed of 891 ms is climbing upward at an angle of 484 deg with respect to the horizontal when the
an experiment shows that a 153-ml gas sample has a mass of 0171 g at a pressure of 761 mm hg and a temperature of 32oc
the half-life of sn-110 is 4 hours if you had 40 grams of this nuclide how much would you have left 8 hours
a 200g 40cm diameter solid cylindrical turntable rotates on frictionless bearings at 60rpm a 20g block sits at the
the addition of one crystal of naclo3 to a solution of this salt causes more crystals to precipitate from solution if
a saturated solution of sodium nitrate contains 80 g nano3 per 100 g h2o how many grams of nano3 must be added to a
a ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center the disk has mass md 34 kg
in the reaction nh3 h2o nh oh- the water molecule serves as a a proton donor b a proton acceptor c a weak base d a
a disk with mass m 88 kg and radius r 038 m begins at rest and accelerates uniformly for t 172 s to a final angular
in the reaction na h2o naoh h2 which of these is true a sodium is oxidized b water is oxidized c hydrogen is
compare and contrast the nitrogen requirements of microorganisms and higher forms of life describing how their