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a large turntable rotates about a fixed vertical axis makingone revolution in 800 s the momentof inertia of the
a 60 cm diameter horizontal pipe gradually narrows to 40 cmwhen water flows through this pipe at a certain rate the
two identical mandolin strings under 200 n of tension are soundingtones with frequencies of 455 hz thepeg of one string
a girl and her bicycle have a total mass of 35 kg at the topof a hill her speed is 5 ms the hill is 14 m high and 100
the bottom of a flat bottom aluminum boat has an area 4 msquared and the mass of the boat is 80 kg if two fishermen
mars is 228 x 1011 m from the sun on average at what minimum speed would it escape from the sun
the mysterious planet x has a radius of 550 x 106 mand an acceleration due to gravity of 130 ms2 at its surface
the position of a hydrogen atom m17x10-27 isknown to within 20x10-6m what is the minimumuncertainy in the atoms
a car drives straight off the edge of a cliff that is58 m high the police at the scene ofthe accident note that the
in 2000 nasa placed a satellite in orbit around an asteroidconsider a spherical asteroid with a mass of 700times1015 kg
a 0360 kg pendulum bob passes throughthe lowest part of its path at a speed of 380 msa what is the tension in the
in the reaction given below for every 12 molecules of aluminum oxide consumed how many molecules of oxygen are produced
calculate the molarity of a sodium hydroxide solution if a 07216 g sample of khp was dissolved in 50 ml of water and
explain why sodium hydroxide cannot be used as a primary or secondary standard - ie why the molarity of a sodium
a gas enclosed in a container fitted witha piston ofcross-sectional area 10m2 the pressure of the gas ismaintained at
an airplane propeller is 202 min length from tip to tip with mass 109 kg the propeller is rotating at 2000 revmin about
duplicate 050 g samples of a finely powdered gold ore are digested in an hclhno3 mix and evaporated to dryness each
if an organic chemist nitrated chlorobenzene would the orthopara ratio be less than equal to or greater than the 3862
a 2995g piece of iron and a 2140g piece of gold of 100c were dropped into 820ml of water at 2585c the molar heat
which are closer together the two nuclei within potassium fluoride kf or the two nuclei within molecular fluorine f2
given that the total number of atoms on our planet remains fairly constant how is it ever possible to deplete a natural
one gram of water changes from liquid to solid at a constantpressure of 100 atm and a constant temperature of 0degc in
a reaction of 1-methylcyclopentene with hbr might in principle lead to a mixture of two alkyl bromide addition products
an electric-generator turbine spins at 3400 rpm frictionis so small that it takes the turbine 190 min to coast toa stop
an 800-gram sample of gas was heated from 25c to 225c during the process 346 j of work was done by the system and its