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suppose the force on an object is 5i-8j n over a displacement of 5i2j metersa how much work is done by that forceb what
draw the skeletal structure for trans-1-bromo-2-isopropylcyclopentane hint make sure the tapered end ie the thin end of
a 90 kg mass is on an inclined plane which is 16 degrees above horizontala if the above mass is connected by a pulley
write a balanced chemical equation for the formation of ch3oh l from the elements in their standard
a ceiling fan is turned on and reaches an angular speed of 120 rev min in 20s it is then turned off and coasts to a
copper can be drawn into thin wires how many meters of 34-gauge wire diameter 6304 x 10-3 in can be produced from the
the spring potential energy is given by u 12 kx2a use calculus to get the equation for a springs forceb the potential
sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway a person is sitting at an
uranium-238 decays very slowly with a half-life of 447 billion years what percentage of a sample of uranium-238 would
a 4middotcm tall candle is placed 300middotcm from a lens with a focal length of 60middotcm note enter the absolute
a solution is made by mixing 120 g of naoh and 750 ml of 0200 m hno3 calculate the concentration of each ion remaining
in a specific heat experiment 2100 grams of aluminum c9130 jkgk at 1000degc is mixed with 360 g water at 200degca
an experiment requires 150 g of cyclohexane whose density at 25 c is 07781 gml what volume of cyclohexane should be
the position vector for a portion is initially r 50i - 60j 20k and then later is r -20i 60j 20 all metersa what is
the masses of the earth and moon are 5981024 and 7351022 kg respectively identical amounts ofcharge are placed on each
a certain protein was found to contain 0230 iron by mass determine the minimum molecular mass of the
joey weighs 77 lb and sits on a seesaw at a distance of 30 inches from the fulcrum jenny weighs 67 lb and sits on the
in a particular region of the earths atmosphere the electricfield above the earths surface has been measured to be 150
2 moles of ideal gas are kept at 57c while it expands to twice its volume the work done by the gas 38 kj what is the
filament is heated to 2000k and is a blackbody of area 1cm2 thermal power radiated is 907 wa at what wavelength is it
a 15 kg block rests on a level frictionless surface and is attached by a light string to a 50 kg hanging mass where the
what is the direction of the electric field along the positive zsemi-axis vertical if the field is created bya a
at 20degc a brass cube has an edge length of 35 cm what is the increase in the cubes surface area when it is heated
an object floating in a lake has 15 percent of its volume above the lake surface what is the density of the
a roller coaster at an amusement park has a dip that bottoms out ina vertical circle of radius r a passenger feels the