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a 46-cm-long wire with a mass of 105 g is under a tension of 520 n both ends of the wire are held rigidly while it is
1 an aqueous solution of weak base b of unknown concentration is tritrated with aknown concentration of strong acid haa
a sinusoidal wave traveling on a string is moving in the positive x-direction the wave has a wavelength of 3 m a
a 373-g sample of an unknown metal initially at 2070oc is immersed in a 100-g sample of water specific heat 4184 j g-1
a stationary sonar station sends out a sound pulse at 40000 mhz it receives a pulse back from an object directly below
what mass of heptane c7h16 is required to produce 902 kj of heat at constant pressure from its combustion in excess
the mean distance between earth and the sun is 150 x 1011 m the average intensity of solar radiation incident on the
a solid cylinder rolls down an incline plane without slipping if the center of mass of the cylinder has a linear
calculate the ph of the solution which results from adding 3854 ml of 01012 m koh to the cyanic acidcyanate buffer of
a nail gun fires a nail into a piece of wood the nail is going a velocity of 90 ms right before entering the wood the
a buffer is prepared by dissolving 400 g benzoic acid c6h5cooh ka 63 x 10-5 and 400 g sodium benzoate c6h5coona in
three point charges q1 q2 and q3 are located in the xy- plane q1 is -5580e-6 c and is located at the origin q2 is
flywheels are large massive wheels used to store energy they can be spun up slowly then the wheels energy can be
in a qualitative analysis procedure a chemist adds hcl to an unknown group of ions and then saturates the solution with
if 500ml of 160m hcl was added to 500ml of 180m naoh calculate the molarity of the resulting nacl solution hint
a cube with 1 m edges is in a uniform electric field of magnitude 17 nc the electric field intersects the top of the
what is the concentration in ppm of sodium fluoride in tap water that has been fluoridated by the addition of 32 of for
an aluminum cylinder with radius 17 cm and length 17 cm is heated to 340 degc find the net power this cylinder radiates
if the earth were to suddenly stop revolving around the sun the gravitational force that the sun exerts on the earth
when a 240- resistor is connected across a 120-v battery a current of 482 ma flows what is the resulting terminal
a flashlight bulb operating at a voltage of 59 v has a resistance of 6 o how many electrons pass through the bulb
calculate the ph of the solution resulting from the addition of 100 ml of 010 m naoh to 500 ml of 010 m hcn ka 49 x
dinitrogen monoxide decomposes into n2 and o2 suppose you have a reaction flask that initially contains only n2o at a
a coffee cup calorimeter contains 3370 g of water at 198 degrees celcius then 4144 g of water with an initial temp of
how many grams of hydrogen are required to completely saturate 75g of oleic acid c18h34o2 which has one double