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a mass of 2121 kg is attached to a light string t is wrapped around a cylindrical spool of radius 10 cm and moment of
a uniform 450n and 7m long ladder rests against a smooth wall making a 30degree angle with wall a 750 n man can climb
one of the more effective treatments for hiv-positive individuals has been for them to take protease inhibitor
a mass m slides without friction on a 1-dimensional track the mass is moving from left to right with initial velocity
alum precipitates to form aluminum hydroxide floc in water at near neutral ph what is the balanced chemical equation
at some point in its orbit our asteroid is moving with a speed of 20 kilometers per second determine the kinetic energy
red light travels at 207times108 ms in a particular type of oil what is the index of refraction for red light in the
write the total and net ionic equations for the reaction of baso4 dissociation and calculate the trial ksp for the
assume this asteroid has the shape of a sphere a rock sitting on the surface of the asteroid has a weight of 100
predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixeda mncl2
suppose you take a 20times102ohm resistor and a 040 h inductor and make a series circuit with a voltage source that has
two coherent sound waves have intensities of 0030 wm2 and 0092 wm2 where you are listeninga if the waves interfere
concentrated sulfuric acid is used as a catalyst for the esterification of acetic acid in the preparation of isopentyl
a 16-m-long string fixed at both ends vibrates at resonant frequencies of 720 hz and 960 hz with no other resonant
assume that you have an aqueous solution of an unknown salt treatment of the solution with dilute naoh na2so4 and kcl
two packing crates of masses 100 kg and 500 kg are connected by a light string that passes over a frictionless pulley
a substance has an extinction coefficient of 5 x 105 l cm-1 mol-1 a concentrated solution of this substance has an
1g of acetanilide was reacted with 045g of sodium bromate and 13mmol of hbr what is the theoratical yield of the
in a certain chemical process a lab technician supplies 231j of heat to a system at the same time 670 j of work are
in the days before compact discs and mp3 players ancient history music was recorded in scratches in the surface of
calculate the ph of 0510 l of a 0220 m nh4cl and 0220 m nh3 buffer before and after the addition of the following
the speed of sound in air at room temperature is 339 msa what is the frequency of a sound wave in air with wavelength
in a series r-l-c circuit r 460 ohm l 0390 h and c 120times102 mfa what is the resonance angular frequency of the
a cannon tilted up at a 30deg angle fires a cannon ball at 90 ms from atop a 16 m high fortress wall what is the balls
a student places her 350 g physics book on a frictionless table she pushes the book against a spring compressing the