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water is moving with a speed of 54 ms through a pipe with a cross-sectional area of 48 cm2 the water gradually descends
why would the cell potential be higher with the addition of 6 m na2s solution to 001 m of cuso4 compared to 6 m nh
a cylindrical fishing reel has a moment of inertia of i 661e-4 kgm2 and a radius of 398 cm a friction clutch in the
a 050 kg physics book with dimensions of 25 cm 20 cm is on a tablea what force does the book apply to the tablenb what
positronium consists of an electron and a positron same mass opposite charge orbiting round their common centre of mass
a 16 kg rock m is on the edge of a 90 m cliff h as shown in figure 11-20 assume that air resistance is negligiblea what
after exhalation human alveoli have an average radius of approximately 005 mm when inflated by inhalation the radius
a 185 103 kg car m has a speed vi of 105 ms the car then hits a tree the tree doesnt move and the car comes to rest as
a skier starts from rest at the top of a 48 m hill skis down a 32deg incline into a valley and continues up a 28 m high
how many milliliters of 34 m nh4cl must be added to 250 ml of 023 m nh3 to obtain a buffer solution having
a 500 g sample of liquid water at 250 degree c is mixed with 290 g of water at 45 degree c the final temperature of the
determine the ph of a solution that is 107 hcl by mass assume a density of 101 gml for the
the transmission of electric power occurs at the highest possible voltage to reduce losses if the voltage were raised
calculate the ph at the equivalence point in titrating 0100 m solutions of each of the following with 0061 m
an asteroid has acquired a net negative charge of 128c from being bombarded by the solar wind over the years and is
a 30 g particle undergoes shm with an amplitude of 20 mm and a maximum acceleration of magnitude 80 multiplied by 103
a radioactive nuclide of atomic number z emits an alpha particle and the daughter nucleus then emits a beta particle
based on the following definitions of stereospecifc and stereoselective propose a reaction that is stereospecific but
how would one prepare 10ml of a 025m hcl solution if 1m hcl was available how much 1m hcl is needed how much distilled
magnesium phosphate precipitates from an aqueous solution does the entropy of the system increase or
the enthalpy of vaporization of ethanol is 3856 kjmol it has a boiling point of 35144 k what is the difference in
a crane lifts a steel sub dens 78 x 103 of mass 20000 kg what is the tension in the lifting cablea when the sub is
a man of mass 739 kg and density 970 kgm3 stands in a shallow pool with 335 of the volume of his body below water
you have 5 l of an ideal gas at 25 ordmc and 5 bar are expanded to a final pressure of 100 bar assuming cv32 r
five students are ice stating they hold hands while skating with a velocity of 10 sec and suddenly attempt to skate in