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a wheel of 40cm radius rotates on a stationary axle it isuniformly speeded up from rest to a speed of 900 rpm in a time
calculate the theoretical amount of cacl2 that would be required to change the temperature of 500 ml of water from 20c
part a methyl violet is an indicator that changes color over a range from ph00 to ph16 what is ka of methyl violetpart
a 53 db sound wave strikesan eardrum whose area is 47 multiplied by 10-5 m2a how much energy is absorbed by the eardrum
leadii forms soluble hydroxo complexes in excess base calculate the molar solubility of lead hydroxide yellow form at
if a 200 g ball is dropped from 100 meters what is its velocity just before it hits the ground what is its velocity
if 1676 ml of an aqueous solution of naoh reacts with 05683 g of khc8h4o4 how many moles of naoh reacted what is the
a 200 g ball is thrown upwards with an initial kinetic energy of 10 joules what maximum height will the ball reach
use the ksp values to calculate the molar solubility of each of the following compounds in pure waterpart a baso4 ksp
a ball of clay falls to the ground from a hieght of 15m itsis in contact with the ground f 020 sec before coming torest
a parallel-plate capacitor is made from two aluminum-foil sheets each 30 cm wideand 500 m long between the sheets is a
190 ml of 0126 m diprotic acid h2a was titrated with 01017 m koh the acid ionization constants for the acid are ka1
a student stands on a bathroom scale in an elevator atrest on the 64th floor of a building the scale reads 836 na as
gasoline flows through a 1 inch diameter hose at an average speedof 5 ftsa what is the rate of flow in cubic feet per
a beaker with 160 ml of an acetic acid buffer with a ph of 500 is sitting on a benchtop the total molarity of acid and
a halfback on an apparent breakaway for a touchdown is tackled frombehind if the halfback has a mass of 91kg and was
twenty-five milliliters of liquid nitrogen density 0807 gml is poured into a cylindrical container with a radius of
a cylinder with a piston contains 0250 mol of oxygen at 240 h105 pa and 355 k the oxygen may be treated as anideal gas
what is the gravitational force between two 15-kg packages that are 35cm apart what fraction is this weight of one
an iron cube floats in a bowl of liquid mercury at0o ca if the temperature is raised to 25o c will thecube float higher
determine whether each of the following salts will form a solution that is acidic basic or -neutral1 naclo2 c2h5nh3cn3
two very small spheres are initially neutral and separated bya distance of 070 m suppose that350 1013 electrons are
an airplane driving at an angle of 30 degrees with the horizontal drops a bag of dans from an altitude of 800 m the
when backpacking in the wilderness hikers often boil water to sterilize it for drinking suppose that you are planning a
a track has a radius of1735 m if you bike ride-around the track making 1800 rev in525 minutes what is your average