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a wave on a string has an amplitude of 032 m a frequency of 120 hz and a wavelength of 14 metersa what is the speed of
three resistors having resistances of r1 153 r2 237 and r3 473respectively are connected in parallel to a 283 v
1 200 ml of a 010m weak acid ka 156x10-6 is titrated with a 020m strong basea what is the ph initially before any
the isotope 22na has a half life of 260 years how much of a 100 gram sample would be left after 100
will a precipitate form when 200ml of pbno32aq with a concentration of 250x10-4 moll is reacted with 450ml of cacl2aq
freight car with mass of 25000 kg rolls down an inclined track through a vertical distance of 15 m at the bottom of the
you have a special lightbulb with a very delicate wire filament the wire will break if the current in it ever exceeds
what is the ph of a 030 m pyridine solution that has kb19x10-9 the equation for the dissociation of pyridine is
an explosion of a 100-kg bomb releases only two separate pieces the bomb was initially at rest and a 400-kg piece
a hockey puck brests on a smooth surface of ice and is struck by a second puck a which was originally traveling at
the composition by mass of methyl alcohol ethyl alcohol n-propyl alcohol and water in two solutions a and b are given
a fire hose of radius 00300m is connected to the pump outlet on the fire truck at the other end of the hose water
a child and an adult are walking their legs swing like physical pendulums and both swing through the same maximum angle
naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter the heat combustion of
fm station kcom transmits simultaneously at a frequency of 999 mhz from two broadcast towers placed precisely 315 m
if cost per gram were not a concern which of the following substances would be the most efficient per unit mass for
suppose you inherit 305 mol of gold from your uncle an eccentric chemist at a time when this metal is selling for 1500
what is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 l per minute at 573 k
an object of mass m moves to the right with a speed v it collides head-on with an object of mass 3m moving with speed
a 240g air track glider is connected to a string hanging over a frictionless pulley a 110g mass hangs from the other
the explosive nitroglycerin decomposes rapidly upon ignition or sudden impact according to the following balanced
a 3440 kg statue is supported by a glass stand the cross-section of the stand is square 015 m to a side before the
a person goes up and down in simple harmonic motion while standing on a trampoline the amplitude is 0125 m and it takes
limonene mw 136 is a pleasant smelling liquid found in lemon and orange peels the bp of limonene is 175 but it
065 of hydrogen chloride is dissolved in water to make 75 of solution what is the of the resulting hydrochloric acid