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to water the yard you use a hose with a diameter of 35cm water flows from the hose with a speed of 15ms if you
silicon has been doped with 5 x 1022 m-3 of boron atoms calculate the conductivity of silicon at a room temperature 32
a typical arteriole has a diameter of 0030 mm and carries blood at the rate of 55times106cm3swhat is the speed of the
how do you prepare 2-bromo-2-phenylpropane from benzene using alcl3 as one of the reagents and going through an
a horizontal pipe contains water at a pressure of 100kpa flowing with a speed of 20ms the pipe narrows to one-half its
which intermolecular force is characteristic of compounds which are liquids at room temperature and have relatively
a rectangular trough 19m long 050m wide and 030m deep is completely full of water one end of the trough has a small
the centers of a 14kg lead ball and a 130g lead ball are separated by 70cmwhat gravitational force does each exert on
draw stereochemical projections for the products of bromine addition to maleic acid and fumaric acid cis and trans
what product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid assuming that it
the nernst equation applies to both cell reactions and half-reactions for the conditions specified calculate the
when 3825 j of heat are added to a 014-m-long silver bar its length increases by 459 10-3 m what is the mass of the
a clove oil contains about 10 of a minor component that can be hydrolyzed to yield the major component and acetic acid
using information from the table of standard thermodynamic data in the textbook calculate the equilibrium constant keq
a small 300g cart is moving at 140ms on an air track when it collides with a larger 500kg cart at rest after the
please show step by step work in how to solve calculate the molarity of a solution that is 700 by mass magnesium
a disk released from the top of an inclined plane has a speed of 632 ms at the bottom how high is the upper end of the
a uniform 295- kg spinning disk with a radius of 0243 m is brought to rest by a brake-pad pressed against the side 0165
why dont you see the effect of rotation on the vibrational frequencies of chromophores in a polyatomic molecule in the
a semiconductor of n-type is know to have an electron concentration of 3 x 1018 m 3 if the electron drift velocity is
the gauge pressure at the bottom of a reservoir is 70 times what it is at a depth of 13 m how deep is the
a thin piece of semiconducting silicon will be used to fabricate an electrical device this layer is 010 cm thick and
if a 100 cm3 solid cube of alumina ceramic initially at 300 c is placed in 50 ml of h2o initially at 25c in a closed
a 47 efficient device uses chemical energy to generate 550j of electric energyhow much chemical energy is useda
calculate the mass of cuso4h2o needed to prepare 30 g of cunh34so4h2o assuming a 90