Total # Posts: 394
A balloon has a volume of 2.75 liters at 25 degrees celsius. What would the balloon's volume be if the temperature is raised to 95 degrees celsius and the pressure remains constant?
June 29, 2010
When 50.0 ml of 1.00 M KOH is reacted with 50.0 ml of 1.00 M HCL, the temperature rose from 20.0 degrees celsius to 28.7 degrees celsius. What is the heat generated by this neutralization? (Assume that the density of the two 1 M solutions is 1.00 g/ml and that the heat ...
June 29, 2010
(b) Two charges of magnitude 0.610 £gC and 0.490 £gC are in a liquid dielectric with dielectric constant £e = 45.0. The charges are separated by a distance of 0.290 m. (i) What is the size of the electric force between the charges? (ii) By how many times is ...
May 1, 2010
Jefferson Products, Inc., is considering purchasing a new automatic press break, which costs $300,000 including installation and shipping. The machine is expected to generate net cash inflows of $80,000 per year for 10 years. At the end of 10 years, the book value of the ...
March 10, 2010
Write a 350- to 700-word essay describing each persons roles. Discuss how they work together when handling a trial. For each person, describe at least one communication exchange they may have during a trial.
January 31, 2010
hey i asked for help with accounting with a question i saw the same question at this site but when i click it it doesnt work is there anyway you can check it for me then what they posted there you can copy and post it here for me).my question was Tracy Migre, a certified ...
January 14, 2010
(hey i asked for help with accounting with a question i saw the same question at this site but when i click it it doesnt work is there anyway you can check it for me then what they posted there you can copy and post it here for me).my question was Tracy Migre, a certified ...
January 13, 2010
Write notes on the different non-covalent interactions that drive protein folding. Explain how these weak interactions are responsible for the specificity of enzyme-substrate and antibody-antigen binding reactions.
December 9, 2009
a student who weighs 500 newtons climbed the stairs frim the first fkoor to the third floor 15 meters above in 20 second How much work did she do? what was her power? How do you write this question out HELP
October 25, 2009
Suppose that you have a $400,000 commercial mortgage with a 6.3% APR and a 25 year amortization period. Further, suppose that the mortgage has a 5 year balloon. How much of the 48th monthly payment is interest and how much is principal? What is the amount of the balloon ...
September 20, 2009
Environmental science ..
Hi, Can any offer some advice please.... I hav been asked to draw a spray diagram for a Water Issue, I have chosen a "drought" issue ... no problem drawing spray diagram etc etc However the I have to explain how The water issue chosen is related to "the notion ...
July 27, 2009
Maths - science
If the current best guess for climate sensitivity is 3.0 degrees C ( The increase in GMST for doubling of CO2 from 280 ppm to 560ppm) Country member energy policies lead to stablilistaion at 650 ppm what would the de facto temperature target be ? given that members accepted a ...
July 3, 2009
Mtahs Metre to millimetres
Hi, Can anyone please check the following scientific metre to millimetre calculation for me:- Subtract the second figure from the second 0.28432882m, 0.28052258m to milliemtres to (1 d.p.) In 1m there are 1000mm, 0.28432882m x 1000 = 284.32882mm 0.28052258m x 1000 = 280....
June 25, 2009
Hi Can anyone help with this little problem , I have to compare the percentage change for the following numbers from a graph (Tonnes) Comparing the lower years with the year 2050 Year 2050 = 14672.873 2046 = 14745.197 1990 = 6096.0 I have worked out the following :- 14672.873...
June 20, 2009
Hi I have calculated some statistics using a spreadsheet program and I have to compare three slopes of regression and their significance level in an energy species hypothesis.. -2.11 level of significance is 5% -4.73 level of significance is 1% -4.13 level of significance is 1...
June 4, 2009
Hi, Can anyone help me with a regression problem, I am doing energy species hypothesis ... I have calculated data and from f value of 22.39 have found the sq root of 4.73. 4.73 is significant at 1% c = f (x) = 0x + 2.2 ( not sure what this output means) I am trying to use the ...
June 2, 2009
Can anyone help with the following:- Measure the relevant sea level rises as accurately as possible. Give your answers in millimetres to one decimal place. What is the predicted annual sea level rise in 2050 associated with each of the following CO2 concentrations and climate ...
May 21, 2009
an agueous solution of ethlylene glycol (C2H6O2) is 40% ethylene glycol by mass, and has a density of 1.05g/ml. What are the molarity, molality, and mole fraction of the solution? Do you know how to solve this...I am kinda lost..please help
October 26, 2008
Would each of the following increase, decrease, or have an in determinant effect on a firms breakeven point (unit sales)? a. An increase in the sales price with no change in unit costs. b. An increase in fixed costs accompanied by a decrease in variable costs. c. A new ...
June 10, 2008
New project analysis You must evaluate a proposal to buy a new milling machine. The base price is $108,000, and shipping and installation costs would add another $12,500. The machine falls into the MACRS 3-year class, and it would be sold after 3 years for $65,000. The ...
June 9, 2008
Eye radius of category 5 cyclones is 20Km. What is the probability that any randomly selected category 5 cyclone will cross the Qld coast such that the eye wall of the cyclone will pass over Cairns which is on a 3200Km section of Qld coast? Cyclones generated in Australian ...
April 4, 2008
Male Red-winged Blackbirds display red wing patches to signal superiority to other males. Hypothesis Bees make honey. Observation Male Red-winged Blackbirds compete for territories. Observation Bees eat honey when no other food (nectar) is available. Prediction A wound is ...
March 15, 2008
Do I have these right? Each of these have one or two words that make them confusing and tricky. Hypothesis a tentative, testable explanation of an observed phenomenon. Observation a piece of the natural world is observed to work in a certain way (witnessed) ...
March 15, 2008
algebra-i post the words that i need to fit toget
What catastrophes makes ur kitten happy? I need to fit all this words together: LET, CHAIN, THE , HAVE, CAT, CRY, ONE,OUT, OVER , LITTLE, DOG, SPILT, NEW, OUTSIDE, MILK, OLD.
October 24, 2007
algebra-what catastrophe makes a kitten happy?
what catastrophe makes a kitten happy? OPTION : LET, CHAIN, THE , HAVE, CAT, CRY, ONE,OUT, OVER , LITTLE, DOG, SPILT, NEW, OUTSIDE, MILK, OLD.
October 24, 2007
One tenth kilogram of Argon is contained in a piston-cylinder assembly. Initially at 4900 K and a volume of 40 liters, the gas undergoes an isobaric process during which the heat input is 30 kJ. Where / how do i start to determine the boundary work and final temperature 100 kg...
March 10, 2007
challenging math problems! :]
1. a total of 120 numbers can be formed using all 5 digits 1, 2, 3, 4, and 5. If these numbers are arranged in increasing order 12 345, 12 453, up to 54, 321, which one is the 75th number in this order? *can someone tell me how to do this problem???^) 2. Jane cycles to work ...
December 14, 2006