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the uniform solid block in the figure has mass 383 kg and edge lengths a 0622 m b 141 m and c 00740 m calculate its
in the mercury emission spectrum three emission bands were observed which were purple green orange and red in the
in the figure two particles each with mass m 095 kg are fastened to each other and to a rotation axis at o by two thin
a ray of light reflects from a plane mirror with an angle of incidence of 37 part a if the mirror is rotated by an
36ml of m-xylened0864 gml is reacted with 06g of pthalic anhydride and 02 g of alcl3 to obtain the product the actual
a hockey puck is swung at the end of a very slight 30 cm long string in a horizontal circle if the speed of the puck is
a spring with spring constant 250 nm is compressed by 013 m and then used to propel a 0035-kg ball directly upward if
write a mechanism for the formation of phenacetin from acetaminophen and
at room temperature soln of caoh2 7409 gmol contains 016 g of caoh2 per 100 ml of solution what is the ph of this
when 5 drops of 010 m naoh were added to 20 ml of the buffer in problem 3 the ph went from 360 to 371 write a net ionic
formic acid hfor has a ka value equal to about 18 10-4 a student is asked to prepare a buffer having a ph of 360 from
the gauge pressure in both tires of a bicycle is 790 kpa if the bicycle and the rider have a combined mass of 780 kg
a laser beam enters a 155 cm thick glass window at an angle of 370deg from the normal the index of refraction of the
a 30g dart is shot straight up at 10ms at the same instant a 24g ball of cork is dropped from 20m above the dartpart a
a chairlift has a length of 2 km a vertical rise of 100 m and it is operating at a constant speed of 8 kmh the chairs
a solution of a weak acid was tested with the indicators used in this exeriment the colors observed were as follows
a 315 cm focal length converging lens is 200 cm behind a diverging lens parallel light strikes the diverging lens after
write an equation for the diels- alder reaction of cyclopentadiene and 14
a student adds 137 grams of nickeliihydroxide powder to 100 l of distilled water at 25 degrees celsius with vigorous
two round rods one steel and the other copper are joined end to end each rod is 0760 long and 135 in diameter the
a series rcl circuit contains a 247- resistor a 195-f capacitor and a 602-mh inductor when the frequency is 2870 hz
an inductor has an inductance of 0013 h the voltage across this inductor is 20 v and has a frequency of 470 hz what is
a gas sample enclosed in a rigid metal container at room temperature 200 has an absolute pressure the container is
a 200 mole quantity of so2cl2 was placed in a 24l container initially there are no products in the container at
a coffee cup calorimeter ccal 1639x103 jdegc-1 contains 344 ml of water at a temperature of 187 degc an unknown metal