August 2, 2014

Posts by jane

Total # Posts: 1,356

environmental science
If you were an environmental researcher and were given funding to assist with one environmental issue, which of the following topics would you choose to spend your funds on?

What is the total charge on all of the electrons in two liters, 2 kg, of water? One mole of water has a mass of 18 g and each molecule of water contains 10 electrons. Way I worked problem: (2kg)(1000g/1kg)(1mol/18g)(10e-/1mol)(-1.60e-19/1e-) What I did do wrong?

What force would you have to exert on a 326-N trunk up a 19.0° inclined plane so that it would slide down the plane with a constant velocity? What would be the direction of the force? (The coefficient of friction between the plane and the trunk is 0.328.) The force of fric...

***Discrete Math***, pi^2.
In S(5), let pi=(245)(1354)(125). (a) Write pi as a product of disjoint cycles. (b) Determine pi^2, pi^5, pi^(-1) (c) What is the order of pi? Why?

***Discrete Math ***
I'm not sure how to start part(a). I believe part (b) is correct, but just in case I would like to make sure it's correct. (a) Explain p^(q-1) = 1 modq , If p and q are distinct primes. Ans: I was thinking of doing something like part (b) but I felt it was somehow wron...

*** Discrete Math ***
I would like to know if my answers are correct. I also need help solving some exercises the right way. (a) Explain why [13] is invertible in Z50. Ans: it's invertible because there's some [t]E Z50 such that [13][t]=1 (b) Use the usual algorithm to find [13]^(-1)and giv...

*** Discrete Math ***
I have solved parts of the question, but I want to know if they are correct. Other parts I'm not sure how to do, like part b and c. g(x)=2x+1 Define g^3= g^2 o g,...,g^n =g^(n-1) o g (where "o" means composition) a) Give rules for g^2, g^3, g^4 Ans: g^2= g o g= g...

Physics HS
Doing a physics lab on elastic material - Asked to list at least three sources of error in measurments and/or laboratory technique. I really do not understand what teacher is looking for?

Car moving down road accelerates at uniform rate 2.8 m/s/s for 4.63 s to reach a speed of 106.7 m/s. 1) How fast was the car initially moving? 2) What distance did it travel during the a/c/c.?

Nuts is dropped from a tree and falls for 8.5 seconds before it hit ground. 1) What was the displacement in meter of nut? 2) With what velocity doe nut hit ground? 3) What is the velocity of nut when it has fallen to 4.25 seconds? 4) What is displacement of nut during the time...

nope I am positive it is the way I have it written. This problem has caused me more grief because I thought there should have been a "x" in it also. Thanks for looking at it for me.

I need to divide this but I am a little confused. I hope this makes sense I tried to make sure I have the parenthesis in all the right spots [(x^2-49y^2)/(6x^2+42y)] / (x^2 - 7xy) [(x^2-49y^2)/(6x^2+42y)]*[1/(x^2 - 7xy)] {[(x+7y)(x-7y)]/6(x^2+7y)]}*[1/ x(x-7y)] {[(x-7y)]/6(x^2...

Int Alegbra
2nd question Flagpole is secured on opp. sides by 2 wires. each of which is 5 ft longer that the pole. Distance between the points where the wire are fixed = to the length of one wire. How tall us flagpole to nearest inch?

Int Alegbra
2 more problems - Factory is to be bulit on a lot 180 x 240 . Local building code - specifies that lawn uniform width and equal in area of the factory which it surrounds. What must the width of this lawn be? Dimensions of the factory.

Int Alegbra
I need some help. A parcel of land is 6 ft longer than it is wide. The diagonal from one corner to the opposite corner is 174ft. What are the dimensions of the parcel? Thanks for your help.

English Honors 11th
Major themes of Beowulf? Is this considered a classic epic poem?

Algebra 1
Determine the maximum and minimum values for the following set.10, –45, 46, 15, –42, –13

Convert 1,953 grams/cubic centimeters into kilograms/cubic meters.

How do I convert 289 kilograms/square meter into grams/square centimeter?

Luigi sells one size of pizza but he claims that his selection of toppings allows for :more than 4000 different choices." What is the smallest number of toppings Luigi could offer?

Suppose that wo dice, one red and one green are rolled. How Many different outcomes are possible for the pair of dice?

problem with permutation - An omelet can be ordered plain or with any or all of the following fillings: cheese, onions, peppers. How many different kinds omelets are possible?


I have to work out the percentage change in the proportion of carbon dioxide in the atmosphere between certain time periods represented on a graph.If someone could give me some hints on how to approach this I would be very grateful just not sure what to arrange calculation.

Thank you

Environmental Science
Are u at university? Write an essay.

business law
1.A federal agency collects documents in its law enforcement activities, these documents are: a. always secret under the Privacy Act. b. available to the public under the Freedom of Information Act, unless they contain trade secrets, information related to national security, o...

I need to know if I have this set up correctly. The perimeter of a rectangle is to be no greater than 300 in., and the length must be 125 in, Write an inequality representing the maximum perimeter. 300>2(125)+2w thanks 300>2(125)+2w

1s2 2x2 2p6 3s2 3p6 is the electron configuration ofr for which ion? I believe your 2x2 should be 2s2. You have 18 electrons in filled orbitals. That could be a +1 charged element 19 (K+) or a +2 charged element 20 (Ca++) \, for example. In either case, it is a very stable ion...

Finding the reciprocal of this problem. Would like to know if I am doing it right. (-1/5)(15)= -15/5= -5/15= -1/5 The last step is wrong. Wouldn't it be done like this? -1/5 * 15/1=-15/5=-3? yes, so far as you have gone, but they ask for the reciprocal. That would be -1/3 ...

How do I describe a whale in a "scintific" version? scientific? Ignoring the second link, there are several sites here that sho...

if gabbro cut across sandstone and schist and schist is the oldest meaning the bottom layer of sediment would the gabbro be the youngest layer im getting really mixed up ive searched on the web for a diagrame but they show intrusions of all kinds i need help in finding a diagr...

hydrogen peroxide is the oxidizing agent

two fruitflies were mated. Red eys and normal wings are dominant to black eyes and vestigial wings. Female: Red eyes, normal wings. Male: Red eyes, vestigial wings. a) what are the possible genotypes of the female b) what are the possible genotypes of the male; c) pick one of ...

can anyone unscramble oeblssaetn its a baseball word. if you can you're my hero =] stolen base

what difference would there be in the product cells at telophase II of the meiosis if there had been one crossing over at a position half way betwwen the huntington disease gene and the centromere from one pair of autosomes (chromosome 4)has a short arm and a long arm on the s...

please can u help i need to a structure of a polymer and i dentify the monomer unit and include three monomer units,from the compound CH2=CH-CH-OH CH3 AND STATE THE POLYMERIZATION INVOLVED IN FORMING THE POLYMER,please help i have tried ,but i cant make head nor tail of it The...

,I NEED TO DRAW A LEWIS STRUCTURE for C2n2,cyanogen,and to state the noble gas,i know the answer is neon,but i have far to many electrons and am getting the gas argon,please help :N:::C:C:::N: please where do u think i am going wrong I don't know. You didn't show any ...

How do you solve an eguation with 2 variables? You have to have two independent equations to solve for each of the variables.

Which sentence is correct? 1. Donna is taller than I. 2. Donna is taller than me. No one at school is sure about this answer. Donna is taller than I. If you say it from your perspective you would say: I am taller than Donna. Not, Me is taller than Donna. er woops, i mean I am ...

I - 127

so when is the velocity zero then?

find a solution for this problem: (2,4), 1/2 = y I do not understand your notation. Are you looking for a function y(x) that goes through the point (x=2, y=4), and has slope 1/2?

I asked about this earlier and got an answer that caused me to rethink my process. Is this a good way to measure iron corrosion: weigh a nail, put it in water and let it rust, remove the rust (in my experiment the rust has come off easily, with just a wipe), and weigh it again...

I am doing an experiment about rust. I need a way to measure the rust that grows on various nails submerged in glasses of water (and other stuff). My plan is to use an analytical balance, measure nails with no rust and the nails after rusting and the second weight should be mo...

a line through ( 0,13) is 5 units from the origin in quadrant 1. find the equation. please help me thanks!

famous australians
What are the sites for Sally Morgan. Here's a ...

How far (in meters) above the earth's surface will the acceleration of gravity be 18.0 % of what it is on the surface?

Physical Chemistry
The measured osmotic pressure of seawater is 25 atm at 273K. a.) What is the activity of water in seawater at 273 K? Take the partial molar volume of water in seawater to be 0.018 M-1. b.) The vapor pressure of pure water at 273 K is 4.6 torr. What is the vapor pressure of wat...

what is a hoodoo and what does it look like This site has pictures as well as an explanation of hoodoos. definitions of-cell,enzymes,glucose,lifecycle,liter,mass,matter

word unscramble

novel= death on the ice
summary of the book

IN ART & DESIGN CAN YOU TELL ME WHAT A RECTANGLE WITH THE WORD "LINE" INSIDE IT MEANS? Since this is not my area of expertise, I searched Google under many different key words, but I couldn't find any applicable sources. Sorry that I could not help. Thanks for as...

1.What is the effect of immmigration in future size in composition in United States? 2.What is the influence of immigration on the overall economy? 3.What is impact of immigration on federal,state and local government? pls..if who knows,pls answer it..i need some help im confu...

journal,im confuse
should electives be mandatory or not? i.e. should art or music be subjects for students to take all 4 years even if they dont like them or not good at them? And what do you want us to do? We try to assist students. Are you to write a journal entry? yes....... whats ur email ad...

Describe the differance between chemistry and chemical technology. Technology is the making of applications. Chemical technology...making chemicals for practical or commercial purposes. Chemistry...the study of materials, their reactions

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