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a roller coaster starts from rest at top of a hill 700 mhigh the car travels to the bottom of the next hill measuring
a hot-air balloon is accelerating upward under the influence of twoforces its weight and the buoyant force for
a ray of light strikes the midpoint of one face of an equiangularglass prism at an angle of incidence of 30 degrees
what if sulfanlic acid sodium nitrate and 1-naphthylamine are made soluble in water in three different volumetric flask
an open-topped cylindrical pot has a volume of 125cm3 what dimensions will minimize the total amount ofmaterial used in
the maximum magnitude of the electric field in an electromagneticwave is 00050 vm what is the maximum magnitude of the
ulf ultra low frequency electromagnetic waves produced in thedepths of outer space have been observed with wavelengths
a 350g sample of a large biomolocule was dissolved in 15g of chloroform and the freezing point depression was
if engine works between a hot reservoir at 640 k and acold reservoir at 320ka what is the maximum efficiency of
some solid-state lasers can provide 85 twof power in 10 ns pulses at a wavelengthof 024 microm how much energy is
a brand x antacid tablet was analyzed by a student following the procedure used in this experiment the student
a determine the amount of work injoules that must be done on a 98 kg payload to elevate it to aheight of 991 km above
calculate the freezing point and boiling point of an antifreeze solution that is 50 by mass of ethylene glycol in water
a gold prospector finds a solid rock that is composed solely ofquartz and gold the mass and volume of the rock are
a 20 kg cart has a spring with spring constant k 5000 nm attached to its front parallel to the ground thiscart rolls at
a skier starts from rest at the top of a hill that is inclined at104degwith the horizontal the hillside is 245 m long
a 68 kg diver steps off a 12 m tower and drops from rest straight down intothe water if he comes to rest 40 mbeneath
a proposed space station includesliving quarters in a circular ring 545 m in diameter at what angular speed should the
carry synthesis of the following compounds using 4-octyne as the only source of carbon provide a full retrosynthetic
two conducting spheres of radii r1 and r2 at the same electric potential v are connected to each other by a wirea what
when aqueous solutions of potassium cyanide and hydrobromic acid are mixed an aqueous solution of potassium bromide and
an ideal fluid of density 085 x 103kgm3 flows at 70 ms through a level pipe with radiusof 050 cm the pressure in the
two small beads with positive charges4q andq are fixed atopposite ends of a horizontal insulating rod as shown a third
a bucket of mass 100 kg is whirled in avertical circle of radius 140 m at thelowest point of its motion the tension in
two masses m1 2kg and m2 4kg rest on frictionless surface and connected by light string a horizontal force f12n is