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the sound level in the middle of a rave is 900 db what is the sound intensity at this
two parallel infinite nonconducting plates are 115 cm apart and have charge distributions of 31 microcm2 and -31
three masses 3kg 5kg 7kg are located in the xy-plane at the origin 23 m 0 and 0 15 m respectively determine the center
a friction-less test track is banked so that cars can move around the track at 37 ms without slipping up or down the
zartan of the jungle crosses a river by grabbing an 8 m long vine conveniently hanging from a strong branch and
a hill is 100m long and makes an angle of 12 degrees with the horizontal as a 50 kg jogger runs up the hill how much
a sled at rest on a flat nearly frictionless surface is suddenly pushed with a force of 402n if the sled has a mass of
a famous mad-physicist dr strangelove tries to find out how much energy is contained in one liter of sunlight assume
a 100-kg mass is placed on a 250o degree incline and friction keeps it from sliding the coefficient of static friction
a homogeneous cylinder of radius 240cm and mass 400kg is rolling without slipping along a horizontal floor at 830ms how
as you saw in part b the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone
a woman at an airport is towing her 200 kg suitcase at constant speed by pulling on a strap at an angle theta above the
consider an electron in the ground state of the hydrogen atom separated from the proton by a distance of 00529 nma
pentane c5h12 reacts with oxygen 02 to produce carbon dioxide and water the reaction is very exothermic with delta h
a mans leg can be thought of as a shaft of bone 12m long if the strain is 13x 10-4 when the leg supports his weight by
an electron is observed traveling at a speed of 189 107 ms parallel to an electric field of magnitude 10660 nc how far
two objects with masses of 300 kg and 500 kg are connected by a light string that passes over a frictionless pulley
a 4000 g block of aluminum at t30 degrees celsius is placed in contact with a 6000 g block of iron at t 100 degrees
a force vector has a magnitude of 589 newtons and points at an angle 43o of below the positive x axis what are a the x
735 g of salt is placed into 400 ml of water and stirred thoroughlya how much salt dissolves into the waterb how much
how could you tell whether the white crystals you have are sodium chloride nacl or sodium iodide nai what precipitate
assume an asteroid has the shape of a sphere a rock sitting on the surface of the asteroid has a weight of 100 newtons
the resistance and the magnitude of the current depend on the path that the current takes the drawing shows three
one kilowatt-hour kwh is the amount of work or energy generated when one kilowatt of power is supplied for a time of
in some communities products that contain phosphates are banned from sale because of pollution of well water streams