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a dry cleaning fluid composed of carbon and chlorine was found to have a composition 145 carbon and 855 chlorine its
a beam of unpolarized light at wavelength 550 nm is incident normally on the face of a sapphire al2o3 crystal which
a diverging lens with f -260 cm is placed 110 cm behind a converging lens with f 200 cm where will an object at
if i want to make the buffer by adding 0100 m naoh instead of sodium acetate how many milliliters of naoh are needed to
which of the following is not a valid criterion for the acceptance of a physical law or theory agreement with past
light of wavelength 580 nm passes through a pair of slits that are 11 microm wide and 215 microm aparthow many bright
high altitude balloons used by environment canada to measure o3 levels in the atmosphere also use a similar idiometric
modern medical imaging can do much more than take a simple x-ray define and explain four methods that are used for
inside a helium nucleus there are two protons each of charge e the distance between the centers of the two protons is
if you are in a roller coaster which is moving with 10ms describing a circular arc with the radius of 10m what is the
comsider the titration of a 25 ml of a 0100 m solution of a weak acid ha pka 75 with a 0200m solution of a strong
the reaction of soda ash na2co3 with calcium sulphate caso4 in water is represented by the following chemical
q perxyacetyl nitrate ch3cooono2 pan is an important species in the atmosphere it undergoes a first order decomposition
a vertical straight wire carrying an upward 21a current exerts an attractive force per unit length of 87x104 nm on a
a the intensity of solar radiation at the earths orbit is about 1360 wm2 using 15 times 1011 m for the distance from
a 53mev kinetic energy proton enters a 015t field in a plane perpendicular to the fieldwhat is the radius of its
a the refractive index of a transparent material can be determined by measuring the critical angle when the solid is in
a sea water has a density of 1025gmlif sea water is about 145 cl by mass how much 1m silver nitrate is needed to
unpolarized light of intensity 600 wmsup2 hits a polarizera what is the intensity of light leaving the polarizerthe
if a student added twofold of acetone the acetone will react with itself and the product would be isolated as diacetone
a man driving a car toward a large vertical wall sounds his horn the car is traveling at 92 kmh the echo off the wall
a wave whose wavelength is 0064 m is traveling down a 732 m long wire whose total mass is 257 kg the wire is under a
initially 0400 moles of hno2 and 0300 moles of nano2 are dissolved in water to a volume of 240 mlplease show all
a piece of metal with a mass of 38 kg and density of 1808 kgm3 is suspended from a string and then completely immersed
a car accelerates uniformly from rest and reaches a speed of 237 ms in 843 s the diameter of a tire on this car is 519