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a 40 kg block slides along a frictionless surface with a constant speed of 50 ms as shown two seconds after it begins
ball 1 with a mass of 150 g and traveling at 11 ms collides head on with ball 2 which has a mass of 300 g and is
some species use echolocation to determine the position and velocity of objects and prey suppose a bat at rest sends
a spaceships maneuvering engine burns hydrogen and oxygen hydrogen is to delivered to this engine at 11atm pressure and
dorothy is up on her 160m by 120m roof enjoying the view of kansas suddenly a strong wind blows down her ladder leaving
648 g of nah2po4 and 2196 gm of k2hpo4 are dissolved in sufficient water to make a liter of solution calculate the ph
two automobiles are equipped with the same single frequency horn when one is at rest and the other is moving toward the
a guitar string produces 4 beats per second when sounded with a 350-hz tuning fork and 9 beats per second when sounded
the following reaction is second order in a and the rate constant is 0039 m-1 s-1 the concentration of a was 030 m at
a solid cylinder is rolling down an incline without slipping over a vertical distance of 3m assuming no losses to
1 based on resonance structures for acrolein do you expect the co stretch in acrolein to be of higher fundamental
sams job at the amusement park is to slow down and bring to a stop the boats in the log ride if a boat and its riders
a fiber optic cable nfiber 206 is submerged in water nwater 135 what is the critical angle for light to stay inside
the reaction is first order in so2cl2 and the rate constant is 30 times 10-6 s-1at 600 k a vessel is charged with 24
you inflate the front tires on your car to 29 psi later you measure your blood pressure obtaining a reading of 13884
two astronauts each having a mass of 880 kg are connected by a 100 m rope of negligible mass they are isolated in space
a block of wood has a mass of 372 kg and a density of 579 kgm3 it is to be loaded with lead so that it will float in
the puck in the figure below has a mass of 0280 kg its original distance from the center of rotation is 400 cm and it
in an electric shaver the blade moves back and forth over a distance of 20 mm the motion is simple harmonic with
a 07818g sample containing phosphate po4 3- was dissolved the phosphate was precipitated as mgnh4po4 by addition of
an extremely thin film of soapy water n 130 sits on top of a flat glass plate with n 111 the soap film has a red
the ir spectrum of 1- hexyne shows a sharp absorption peak near 2100 cm-1 owing to the cc triple bond stretch the ir
a uniform cylindrical pulley of mass m127 kg and radius r0636 m rotates freely about a fixed horizontal axis a block of
how do you name a chemical compound like cascn2 i know it is calcium and i found where scn is thiocyanide but how do