Recent content by calculus_love

Neutralization by Acid-Base Titration Problems !HELP! Hey guys, could you please take a look at my work and let me know if I did it correctly or not? I'm not sure if I did, so if I did anything wrong I'd really appreciate if you could explain! Thanks! 1. A sample of solid potassium...

I insist on it because there has to be a simpler way to get to the answer without having to write it all out the way I did. I know for sure that an integral can get me the solution, I'm just not sure how to set it up. Are you saying there is no integral that could get me 180 lbs with the...

OH! Oops, got it! So then: W=3260(10)+3160(10)+3050(10)+2930(10)+2800(10)+266 0(10)+2510(10)+2350(10)+2180(10)= 249,000 ft-lbs. Right? And also, for a), assuming that the patterns of weight is constant, how would my integral look to conclude that the last person to get off the elevator was...

For b) then, would my Riemann sum be W=3260(10)+3160(10)+3050(10)+2930(10)+2800(10)+2660(10)+2510(10)+2350(10)+2180(10)+2000(10)? Giving me 269,000 ft-lbs.

For a) I just wrote it all out to begin with some idea. floor 1 - 100 lb floor 2 - 110 lb floor 3 - 120 lb floor 4 - 120 lb + 10 lb = 130 lb floor 5 - 130 lb + 10 lb = 140 lb floor 6 - 140 lb + 10 lb = 150 lb floor 7 - 150 lb + 10 lb = 160 lb floor 8 - 160 lb + 10 lb = 170 lb floor 9 -...

A 2000lb elevator travels from the ground floor to the 1st floor and on to the 9th floor. At the 1st floor, a 100lb person gets off, on the 2nd floor a 110lb person gets off, on the 3rd floor a 120lb person gets off and so on and so on till the last person gets off on the 9th floor. a) How...