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a communications satellite with a mass of 400kg is in a circular orbit about the earth the radius of the orbit is
it takes 510j to raise the temperature of an 114g piece of unknown metal from 130c to 250c what is the specific heat
if you twirl a small 90-g wooden ball in a circle at 30 revolutions per second on a light 11-cm string approximately
a 16-m-long string fixed at both ends vibrates at resonant frequencies of 708 hz and 1062 hz with no other resonant
a ship on the surface of the ocean receives a sonar echo back from an underwater object the echo path from the object
on a cold day 28100 j of heat leaks out of a house the inside temperature is 190deg c and the outside temperature is
what kind of mechanism can better account for the product mixture obtained from the dehydration of cis- and
a horizontal disk of mass 012kg and radius of 013m rotates freely about a vertical axis through its center with an
a 24 gev proton in cosmic radiation moves in earths magnetic field b with a velocity v perpendicular to b in a region
if one cubic centimeter section of a reactor has a macroscopic fission cross section of 0989 cm-1 and if the thermal
a bowling ball m 1200 kg moving to the right with a speed of 30 ms collides head on in a perfectly inelastic collision
when chlorine is added to acetylene 1122-tetrachlorothane is formed how many liters of chlorine will be needed to mkae
a telescope can be used as a camera if the film is placed at the image position of the objective lens or mirror so the
a compound forms cis-12-dimethylcyclopropane when it is reduced with h2 and pdc the h nmr spectrum of the compound
a conducting sphere with an inner insulating sphere inside of it carries a total charge of 5 nc the charge within the
a 145 g sample of an iron ore is dissolved in an acid and the iron is obtained as fe2 ag to titrate the solution 216 ml
a spherical asteroid has a radius of 545 km and a surface g of 30 ms2a what is the mass of the asteroidkgb what is the
a sample of material contains contains 20 mg of i 131 calculate a the number of i 131 atoms initially present b the
the majority of industrial method for the preparation of elemental phosphorus is heating a mixture of phosphate rock
for a particular reaction h 13999 kj and s 2987 jk calculate g for this reaction at 298 k is this reaction
a point mass on a hookes law spring is pulled aside 10 cm from the center position and then released the resulting
a ball hangs motionless from a ceiling by a stringhow many forces are acting on the ball what are
a sample contains a mixture of two dyes a and b the molar absorptivity coefficients for dye a are 4875 m-1cm-1 at 628nm
an aluminum cube 10 cm on a side is subject to shear stress a force of 40000 n acts on each of four faces calculate the