TheOne Posted September 5, 2005 Share Posted September 5, 2005 I'm having some trouble with a couple of the practice problems from a study guide. Can anyone help? 1.)The area of a telescope lens is 4149 mm2. (a) What is the area of the lens in square feet (ft2)? ft2 (b) If it takes a technician 65 s to polish 175 mm2, how long does it take her to polish the entire lens? 2.) The volume of a certain bacterial cell is 1.98 µm3. (a) What is its volume in cubic millimeters (mm3)? mm3 (b) What is the volume of 105 cells in liters (L)? 3.) Convert 709.5 meters to centimeters. Is this right? 7.095 x 10^2 4.) The concept of ____ indicates the ability of a person to measure consistently. precision usefulness accuracy or statistically? 5.) Select the correct number of significant figures for 0.0230 one two three four five or six? Could you explain how you get each one? Thanks Link to comment Share on other sites More sharing options...
jsatan Posted September 5, 2005 Share Posted September 5, 2005 NM, ignore me Link to comment Share on other sites More sharing options...
woelen Posted September 5, 2005 Share Posted September 5, 2005 Didn't you learn any arithmatic on primary school? Link to comment Share on other sites More sharing options...
TheOne Posted September 5, 2005 Author Share Posted September 5, 2005 You mean "arithmetic". Yeah I did spelling bee national champion. I also did those problems already but the only friends I have with the same study guide, I can't compare answers with because they don't prepare for any tests using practice problems. They just pray they get good grades. I still need some help. Link to comment Share on other sites More sharing options...
YT2095 Posted September 5, 2005 Share Posted September 5, 2005 Mathematics is the least of the problems, more to the point What is this doing in Chemistry? LOL Link to comment Share on other sites More sharing options...
TheOne Posted September 5, 2005 Author Share Posted September 5, 2005 The class I'm in is a chemistry class. That I am sure of... I think... lol. Anyone know any of the problems? Link to comment Share on other sites More sharing options...
Klaynos Posted September 5, 2005 Share Posted September 5, 2005 Mathematics is the least of the problems, more to the point What is this doing in Chemistry? LOL You see this is what I was saying on IRC the other day, we need a thread somewhere explaining what is what science. OK for somethings it can cross boundries (some people think electron energy levels should always be to do with chemistry), but I saw a post the other day that said they thought it was something to do with chemistry as they thought it was a specific force... </rant> Link to comment Share on other sites More sharing options...
YT2095 Posted September 5, 2005 Share Posted September 5, 2005 well... I COULD be wrong, this thread either belongs in here or Engineering, I this subforum is the most appropriate though Link to comment Share on other sites More sharing options...
CPL.Luke Posted September 5, 2005 Share Posted September 5, 2005 the problems all involve basic conversions, I can't giv you any advice other than to memerize a conversion table. Link to comment Share on other sites More sharing options...
Klaynos Posted September 5, 2005 Share Posted September 5, 2005 there are online conversion sites which will practically do the work for you, but that just removes all purpose of the exersise... Link to comment Share on other sites More sharing options...
Douglas Posted September 5, 2005 Share Posted September 5, 2005 4.) The concept of ____MOTOR AND PROCESS SKILLS____ indicates the ability of a person to measure consistently. precision usefulness accuracy or statistically? Try http://www.onlineconversion.com/area.htm Scroll down to square .......... Link to comment Share on other sites More sharing options...
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