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as seen from above a playground carousel is rotating counterclockwise about its center on frictionless bearings a
if 450 ml of ethanol density0789 gml initially at 90 c is mixed with 450 ml of water density10 gml initially at 286 c
a square steel plate is 02 m on a side and 4 mm thicka find the shear strain that results if a force of magnitude 8x104
in a solution of pure water autoionization occurs producing conjugate acid-base pairs in solution2h2o h3o oh-why then
a cube of copper with each edge having the dimension 127 mm is put in a vise and squeezed by a force of 215 n exerted
a student placed 160 g of glucose c6h212o6 in a volumetric flask added enough water to dissolve the glucose by swirling
a solid uniform sphere starts from rest and is rolled down a 50m high hill the first half of the hill is rough and
a ball with mass 25kg is moving in outer space with a velocity of 60 ms horizontally and a box of mass 45kg is moving
a given 775 g of butanoic acid and excess ethanol how many grams of ethyl butyrate would be synthesized assuming a
you are standing on a bridge that is 500 m above a dried up riverbed attached to your feet is a 300m long bungee cord
find the center of mass of a uniform density cone give your answer as a distance from the cone point and as a fraction
derive an expression for spring potential energy us where the spring force is fs -kx and delta u -wc where wc is the
a car starts from rest and moves with an acceleration of 1ms for 1s the motor is then turned off and the car is allowed
ag3po4s3nach3cooaq what volume of a 00240 m solution of na3po4 is required to react completely w821 ml of a 00887 m
an 80kg painter climbs a 245m ladder that is at an angle of 25 degrees with a vertical wall what is the work done by
500-gram sample of impure zinc reacts with exactly 129 ml of hydrochloric acid which has a density of 118 gml and
given the equation 4 fes 3 o2g 2 fe2o3s what is the theoretical yield of fe2o3 from the reaction of 486 g fe with
a block mass 20 kg is hanging from a massless cord that is wrapped around a pulley moment of inertia 11 10-3 kg
the heat capacity of copper is 0382 jg c a 226 g sample of copper at 93 c is placed in 50 g of water at 239 c what is
a proton is at the origin and an electron is at the point x063nm y-045nm find the magnitude of electric force on the
a 0831-g sample of so3 is placed in a 100-l container and heated to 1100 k the so3 decomposes to so2 and o2 2so3g
a solid cylindrical disk has a radius of 015 m it is mounted to an axle that is perpendicular to the circular end of
selenic acid is a strong diprotic acid and dissociates according to the following equationsh2seo4aq lt----gt haq
in a certain region the earths magnetic field has a magnitude of 48 x 10-5 t and is directed north at an angle of 66deg
it is found that 64 x 10-4 g of ag3aso4 dissolves per 500 ml of aqueous solution at a given temperature calculate the