Monday
October 20, 2014

Posts by WEB


Total # Posts: 5

Chemistry
How many milliliters of a 5.0 M H2SO4 stock solution would you need to prepare 123.5 mL of 0.48 M H2SO4?
April 7, 2014

Stastics
A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 98% confident that the true mean is within 2 ounces of the sample mean? The standard deviation of the birth weights is known to be 5 ...
November 5, 2011

Physics
Push against the rock= (mg)\(u1+u2)
February 10, 2010

Physics
A 56 kg rock climber is climbing a "chimney" between two rock slabs as shown in the figure. The static coefficient of friction between her shoes and the rock is 1.02; between her back and the rock it is 0.70. She has reduced her push against the rock until her back ...
February 10, 2010

physics
force of push = (mg)/(u1+u2), so (49*9.8)/(1.2+.8)=240.1N fraction of weight= (u1)/(u1+u2),so (1.2)/(1.2+.8)=.6
October 26, 2009

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