Friday
September 19, 2014

Posts by j


Total # Posts: 724

science
How is homeostasis maintained in the digestive system? Homeostasis is maintained by negative feedback - For example.....a thermostat controlling temperature. When the temp goes down, the thermostat senses it and turns on the heat. When it gets to hot, negative feedback occurs...
March 27, 2007

Biology
What is the formula for field of view? Thank you for using the Jiskha Homework Help Forum. Here are some sites that hopefully will help you: 1. (Broken Link Removed) 2. http://www.rainbowcctv.com/tech/angle.html 3. http://en.wikipedia.org/wiki/Depth_of_field
March 8, 2007

Math
My question is to get a better understanding of this. Basically, these two problems, I did it WITHOUT replacement. So I would multiply each defects and so forth. My question is, would I have to subtract the total from 1 in the second question? I am not exactly clear on when to...
March 6, 2007

Math Probabilities
A bag contains 9 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color? That would be the probability of two reds PLUS the probability of two blues. The probability of two ...
March 6, 2007

Biology
Are IV fluids hypertonic, hypotonic, isotonic? The tonicity depends on what fluids are being used in the IV. Since this is not my area of expertise, I searched Google under the key words "IV fluids hypertonic hypotonic isotonic" to get these possible sources: http://...
February 27, 2007

Biology
Are any of these anabolic reactions? a. making starch from many glucose molecules b. making proteins from many amino acids c. making many glucose molecules from many glycogen molecules Since this is not my area of expertise, I searched Google under the key words "anabolic...
February 27, 2007

More Chemistry
HNO3
February 15, 2007

help me for this stupid worksheet
Hi
January 31, 2007

math 4th grade
If Sally gave a survey with five colors listed and ask each person who takes the survey to pick one color. She assumes that the results if given to 24 persons the results would be 1/2 blue, 1/12 red, 1/8 blue, 1/4 green, and 1/24 orange. What number of surveys would best prove...
January 25, 2007

Chemistry
how about expressing 230 parts per thousand (ppt) of SO4^2- in mol per kg? 230 ppt is 230 g/1000 g = 230 g/kg. Convert 230 grams into mols and you have it. SO, I come up with an answer of 2.39 mol/kg. Correct? J
January 22, 2007

Economics
did you ever get answer for this ?
January 14, 2007

largest possible area
The largest possible area is therefore A(max)=(1/2)xy =(1/2)[[5/sqrt(2)][5/sqrt(2)]] = (1/2)(25/2)= 25/4 sq cm
November 18, 2006

acids and alkalis
hi are you missy missy
November 4, 2006

science
What controversy was connected to Surface Mining Control and Recovery Act? Check this site for opposition to that act. http://www.teachcoal.org/aboutcoal/articles/coalamer.html
October 27, 2006

word unscramble
ttlrmehee
September 28, 2006

BRAINTEASERS
theres no place like home
September 20, 2006

Distributive property
Use the distributive property to remove the parentheses. -(-w-2u+2)
September 20, 2006

physics
So I'm still confused on what's happening here?
September 18, 2006

Physics, Desperate Need of help!
I would assume it's 80x32x26 = 66560cm^3
August 31, 2006

australia's role in united nations
Outline Australia’s positions and responsibilities in the United Nations australia plays a big role :P australia's role in the united Nations was to ..... not much Hey, it would help heaps if you could andwer this question, What is Australia's role in the United ...
August 8, 2006

History, Geography
Outline Australia’s positions and responsibilities in the United Nations
August 8, 2006

History
What has been Australia’s involvement in UNESCO, UN conventions and international environmental treaties? These sites detail Australia's involvement in these international organizations. http://www.dfat.gov.au/un/ https://www.cia.gov/cia/publications/factbook/geos/as....
August 8, 2006

MATH - Rational Expressions
HELP PLEASE! I am taking my college placement test tomorrow and am working on the sample test now. I need help with this question about Rational Expressions... For all r (<INSERT>is not equal to sign)+ or - 2 r(squared) - 5r+6 (All Over) r(squared)- 4 I know the answer ...
August 16, 2005

Linear Equation in Two Variables
I have to take a college placement test and am studying hte practive test. He is the question . . . What is the equation of the line that contains the points with (x,y) coordinates (-3,7) and (5,-1)? I know that the answer is y=-x+4, but I cannot remember from high school what...
August 2, 2005

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