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three uniform spheres are located at the corners of an equilateral triangle each side of the triangle has a length of
three blocks with masses m15kg m210kg and m37kg are connected by two pieces of very light strings the system is being
a 40 g block of ice is cooled to -78degc and is then added to 550 g of water in an 80 g copper calorimeter at a
a suppose that you have a 390 a 780 and a 220 k resistor what is the maximum resistance you can obtain by combining
a student sits on a swivel seat initially the student is at rest holding a spinning bicycle wheel that has an angular
an unknown solution of ethanol was titrated with 250ml of 02m solution of potassium dichromate in sulfuric acid in
a the electric starter in an automobile equipped with a 12 v battery draws a current of 9000 a when in operation
calculate the reversible work required to transport 1mol of k from a region where ck525 mm to a region where ck355 mm
a 460 kg block of ice at 0degc is added to an insulated container partially filled with 106 kg of water at 150degca
suppose the concentration of protons inside a cell membrane is cin and similarly the concentration outside is cout
the density of charge-carrying electrons in copper is 85 times 1028 electrons m3 its resistivity is 172 times 10-8
an object is placed 126 cm in front of the cornea the cornea is thin ans has approximately parallel sides so that the
a solution contains 025 m nino3 and 025 m cuno32 can metal ions be separated by slowly adding na2co3 assume that for
a satellites are placed in a circular orbit that is 364 times 107 m above the surface of the earth what is the
the cheetah can reach a top speed of 114 kmh 71 mih while chasing its prey in a short sprint a cheetah starts from rest
why does the addition of the no2 to the acidic solution of acetanilide need to be performed at a cold temperature what
a 47-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion
1 give an example of thermodynamically stable system and a kinetically stableone whats the differencethe following
a train 350 m long is moving on a straight track with a speed of 848 kmh the engineer applies the brakes at a crossing
calculate the standard cell potential and the equilibrium constant for the oxidation of ethanol to acetaldehyde
runner a is initially 30 mi west of a flagpole and is running with a constant velocity of 30 mih due east runner b is
a car starts from rest and travels for 50 s with a uniform acceleration of 23 ms2 the driver then applies the brakes
calculate the maximum concentration in m of silver ions in a solution that contains 0025 m co32- the ksp of ag2co3 is
a major-league pitcher can throw a ball in excess of 415 ms if a ball is thrown horizontally at this speed how much
a thermally powered refrigerator receives heat from a flame at 400 c and withraws heat from a cold box at -40 c if the