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amber n 1546 is a transparent brown-yellow fossil resin an insect trapped and preserved within the amber appears to be
in a certain time light travels 478 km in a vacuum during the same time light travels only 237 km in a liquid what is
a man of mass 765kg walks down the aisle of an airplane at a speed of 110 ms in the forward direction while the plane
lithium metal dissolves in water to yield hydrogen gas and aqueous lithium hydroxide what is final concentration of
when an archer pulls an arrow back in his bow he is storing potential energy in the stretched bowa compute the
which of the following is the most effective buffer system for a ph value of 1015 hco3- co32- ka 47 x 10-11 i have
a man drags a table 430 m across the floor exerting a constant force of 460 n directed 290deg above the horizontala
1 determine the maximum likelihood estimator for mu from an exponential random sample x1 xn with common mean ex1 mu
a man of mass 765 kg walks down the aisle of an airplane at a speed of 110 ms in the forward direction while the plane
a typical aaa battery has stored energy of about 3400 j battery capacity is typically listed as 625 ma h meaning that
what is the freezing point of a solution prepared by dissolving 39g of benzene c6h6 in 500g of cyclohexane fp for
the moon has a mass of 736 1022 kg and moves about the earth in a circular orbit of radius 380 108 m with a period of
a cell based on the reaction below has a standard potential of 042 v at 25degc if all of the species are at standard
a 15 kg object has a velocity of 5j ms at t0 it is accelerated at a constant rate for five seconds after which it has a
butanoic acid ch3ch2ch2 cooh is a weak acid which of the following would be the ph of a 001 m butanoic acid the answer
a sample solution is to be analyzed for cu2 three 50 ml aliquots are removed to aliquot no1 is added nothing to no2 is
three 004 kg particles have been glued to a rod of length l 13 cm and negligible mass and can rotate around a
two light pulses are emitted simultaneously from a source the pulses take parallel paths to a detector650m away but one
carbonic acid is a diprotic acid h2co3 with ka1 43 x 10-7 and ka2 48 x 10-11 calculate kb for the carbonate ion
a submarine is 308 m horizontally out from the shore and 141 m beneath the surface of the water a laser beam is sent
what structure is responsible for the base peak of a cyclohexene and an unsaturated
as seen from the window of a space station a 990 kg satellite sailing along at 94 ms collides head-on with a small 2860
what is the electric flux through sphere that has a radius of 100 m and carries a charge of 100 c at its
the pattern was recorded by using a neutron detector to measure the neutron internsity at different positions notice
gas a enters the tube passes through the contents of b and emerges as gas c if gas a is a mixture of carbon monoxide