Friday
September 19, 2014

Posts by nina


Total # Posts: 465

Physics
The voltage across the cell membrance is 0.070 V the cell membrane is 0.10 µm thick what is the work done in joules to move one sodium ion (charge= 1.6 x 10 ^-19 C) from inside the cell to outside the cell?
March 30, 2013

Physics
The voltage across the cell membrance is 0.070 V the cell membrane is 0.10 µm thick what is the work done in joules to move one sodium ion (charge= 1.6 x 10 ^-19 C) from inside the cell to outside the cell?
March 30, 2013

Physics
In a typical living cell, the electric potential inside the cell is 0.070 V lower than the electric potential outside the cell. The thickness of the cell membrane is 0.10µm. What is the magnitude and direction of the electric field (E) within the cell membrane?
March 30, 2013

Geometry
If EF=2x-19, FG=3x-15, and EG=26, find the values of x, EF, And FG
March 13, 2013

Math
It has 6 sides but is the angle the same
March 12, 2013

Math
How many angles does a hexagon have
March 12, 2013

Chemistry
A salicyclic acid (MW= 138.123 g/mol) solution has a pH of 2.43. When 100 ml of this solution was evaporated 0.22g of dry salicylic acid was recovered. What is the Ka of salicylic acid?
March 12, 2013

Chemistry
what is x?
March 12, 2013

Chemistry
A salicyclic acid (MW= 138.123 g/mol) solution has a pH of 2.43. When 100 ml of this solution was evaporated 0.22g of dry salicylic acid was recovered. What is the Ka of salicylic acid?
March 12, 2013

political science
which political ideology would be against abortion, and why?
March 10, 2013

Math
Complete 0.246X10= Is it .0246
March 5, 2013

Fahrenheit 451
Reread these lines from the text, “No we’ll save what we can, we’ll do what there is left to do. If we have to burn, let’s take a few more with us. Here! He remembered the books and turned back. Just on the off chance.” What future event in the story ...
February 24, 2013

Fahrenheit 451 theme
Which detail from the text best exemplifies the theme of the novel? 1) “We know the damn silly thing we just did. We know all the damn silly things we’ve done for a thousand years and as long as we know that and always have it around where we can see it, someday we&#...
February 24, 2013

Fahrenheit 451
Carefully reread these lines, “Somewhere the saving and putting away had to begin again and someone had to do the saving and keeping, one way or another, in books, in records, in people’s heads, any way at all so long as it was safe, free from moths, silverfish, rust...
February 24, 2013

Book: Fahrenheit 451 Ray Brad Bury
. What does Granger mean when he says “I am Plato’s Republic” or that Montag is “the book of Ecclesiastes”?
February 24, 2013

Math Problem/Homework Help Me!!!!!!!!!!!!!!!!!!!!!!!
I have 26 questions on my math homework! but i need help with these! please help me i need it finished now! 2. Which type of angle do construction workers use when building to make sure that the walls and floors of a building are perpendicular? (1 point) acute obtuse right ...
February 12, 2013

algebra 3
how would you solve for this? and what is the answer? 48p^3+2p^5-p^7
February 9, 2013

Chemistry
How many moles of carbon dioxide would be produced if 25 g of copper carbonate were completely decomposed by heating?
January 30, 2013

English
High I need to describe Rocky Mountains from my view but i never saw them. Can someone please help me to write 2 sentence description of rocky mountains. Our teacher told us it should be in Imagery Format. Please Help!!!!
January 27, 2013

Math
Why is it essential to use distributive property in algebraic equations
January 25, 2013

Math
How to find scale factor of dilation: A-(-1,2) B-(2,5)
January 25, 2013

Math
A machine does 1000 tasks in 4.3 x 10^-2 seconds. How much task will be done in 2 hours? Leave answer in scientific notation.
January 24, 2013

Math
amy makes 6% commision on every home sold. If amy makes 12500 in 2 months what is her total in home sales for the 2 moths
January 23, 2013

Math
Jasmine is manufacturing engineer who is trying to find out if she can use a 12-inch by 12-inch sheet of cardboard and a 15-inch by 16-inch sheet of cardboard to make boxes with the same height and volume. In such a pair of boxes possible?
January 15, 2013

math
2 over 5on a figure is shaded what percent is not shaded
January 15, 2013

Math
What Are Five Ratio Survey Questions I Can Do On A Typical Family Of 6 ?
January 8, 2013

Math
What Are Five Ratio Survey Questions I Can Do On A Typical Family Of 6 ?
January 8, 2013

math
ss33
January 4, 2013

math
(h)t=-4.9t^2+98t+8 Find the max height?
January 2, 2013

math
Each wall of a square meeting room is 40 feet long. If loudspeakers are placed 20 feet apart around the room, how many loudspeakers are in the room?
December 18, 2012

The Age Of Jefferson To The American Expansion
10 is d 12 is a 13 is a 20 is d took the test and got these right i looked up all the answers and got them right i just had a little different questions than you so hope this helps a little
December 7, 2012

psychology -statistics
why can we use the same multiple comparison procedures for between subjects, repeated measures, and mixed designs without changing the formulas
November 30, 2012

Statistics
Explain how the error term in a repeated measures ANOVA is actually an interaction
November 30, 2012

Statistics
Explain how the error term in a repeated measures ANOVA is actually an interaction
November 30, 2012

Math
Miss Mary bought 2 liters of coke, 3 times as much Pepsi and 5 liters of sprite. How many liters of soda did she purchase?
November 27, 2012

Physics
two equal charges exert an elecrtric force on each other of 0.0385N when positioned 0.15m apart determine the magnitude of the charge on each point.
November 26, 2012

science
what is a gradient
November 26, 2012

reading
Yes, i did c for number too but it turned out to be a b the other were correct they are all b. Trust me, if you don't trust me get it incorrect and see I was telling the truth.
November 25, 2012

reading help me pls :(
Don't you need to have read the book or story to do these questions?
November 17, 2012

Ms. Sue can you answer this please
Damon's expertise it too expert for my knowledge and math level thank you though Ms Sue.
November 17, 2012

Ms. Sue can you answer this please
Damon had answer, but i just want to see if you'll explain it differently... The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?
November 17, 2012

Please Help! Quadratic Eqautions
yes thank u but i don't understand simplified form please!!
November 17, 2012

Please Help! Quadratic Eqautions
The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?
November 17, 2012

Please Help! Quadratic Eqautions
too*
November 17, 2012

Please Help! Quadratic Eqautions
Honestly, although i appreciate this help Is there any other way to do this problem. I think this is a little to advanced because i really don't understand it.
November 17, 2012

Please Help! Quadratic Eqautions
Thank you Much Appreciated !! (Y):)
November 17, 2012

Please Help! Quadratic Eqautions
oh ok
November 17, 2012

Please Help! Quadratic Eqautions
The question doesn't state wheater it's a max or min it'as grade 11 math no I have not done calculus
November 17, 2012

Please Help! Quadratic Eqautions
P(t) = 6 t^2 + 110 t + 3000
November 17, 2012

Please Help! Quadratic Eqautions
oh i'm sorry. i left out that part.. the question is When will the population reach 6000?
November 17, 2012

Please Help! Quadratic Eqautions
The population of a town P(t)is modelled by the function P(t)=6t+110t+3000, where t is time in years. Note t=0 represents the years 2000.
November 17, 2012

math
Thank you
November 13, 2012

math
How many feet are there in 156 inches? Would I do 156/12
November 13, 2012

chemistry
a photon has 3.3 *10-19 joules of energy. what is the wavelength of this photon?
November 9, 2012

Math
John ate some pie for lunch. He left 2/3 of the pie. Jerry ate 1/2 of the remaining pie. How much pie did Jerry eat?
November 8, 2012

math
a farmer has cows and chickens. he has a total of 20 heads and 64 legs. How much of each animal does he have?
October 25, 2012

Math 142
800 hundred chances are sold at $2 apiece for a raffle. There is a grand prize of $650 dollars, two second prizes of $250, and five third prizes of $50. First calculate the expected value of the lottery. Determine if the lottery is a fair game. If the game is not fair, ...
October 19, 2012

art
hundert wasser
October 13, 2012

math
danke denise ich weisst auch die
October 12, 2012

deutsch
ich vesteh deutsch.
October 12, 2012

mathe
thank you
October 12, 2012

phisyc
wer kann deutsch
October 9, 2012

math
a ball is thrown upward at 64 feet per second from the top of an 80 feet high building. The height of the ball can be modeled by S(t) = -16t^2 + 64t + 80(feet), where t is the number of seconds after the ball is thrown. describe the graph model
October 7, 2012

Statistics
What is the probability that we would obtain two sample means that differ by 1.875, when the SD of the sampling distribution is estimated at .125 when our sample has 8 subjects?
October 7, 2012

statistics
How is the standard error of the mean influenced by sample size and standard deviation?
October 6, 2012

math
how to solve a quadratic equation in one variable ? plsss
October 6, 2012

American History
okay i took the test and made a 100 some of my questions were different so ill just give the ones that are the same cause some are incorrect question 2 is b question 3 is d question 9 is d question 13 is c question 14 is d question 18 is c now like i said i took the and made a...
October 1, 2012

Geomatic Sequence
In a geomatic sequence, the seventh term exceeds the fifth term by 1920. Find the sum of the first eleven terms if the common ratio of the sequence is 2.
October 1, 2012

Arithmetic Sequence
Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.
September 30, 2012

biology
What structure in the moss is like the spore case in ferns?
September 26, 2012

ECON 3
A manufacturer of television sets trims sets in either black or grey and uses either a walnut or a maple stain. A consumer survey showed that 20% of consumers wanted a black trim with a walnut stain and that half of all consumers wanted a black trim or a walnut stain. If it ...
September 19, 2012

ECON 2
False signals. A procedure has been designed that will detect 99% of the defective assemblies in a manufacturing process. However, the probability that the procedure will declare a good assembly defective is 0.05. If 2% of all assemblies are defective, what percentage of the ...
September 19, 2012

ECON
A bank vice-president declared that the probability that the bank’s funds were being embezzled was 0.70 and that the probability that an embezzlement would be discovered by the bank examiner was 0.90. Given that the bank examiner does not find the embezzlement and that ...
September 19, 2012

math
Yolanda is putting up a fence for her dog in the shape of a square. Each foot of fencing costs $7. If Yolanda is planning to have each side of the fence be 10 feet long, how many feet of fencing will Yolanda need?
September 19, 2012

Scientific Question
Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of clothes b. Different ...
September 4, 2012

Maths
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=Ae^kt where A and k are constants. With the aid of appropriate examples, explain how the growth of P over ...
July 30, 2012

Maths B - Population Growth
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=¡¼Ae¡½^kt where A and k are constants. With the aid of appropriate examples, ...
July 30, 2012

Maths B question - population
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain how the growth of P ...
July 28, 2012

What does this Maths B question mean?
How do I do thi question? An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(...
July 28, 2012

Explanation of Maths B Question
An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(outlined on the next page...
July 28, 2012

Explanation of Maths Question
Can someone please explain what does these questions mean? Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, ...
July 28, 2012

11 Maths B
Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along the x-axis
July 28, 2012

History
Discuss the differences and similarities in post-independence policies in India and Egypt. Please help me with this question If you could give me a little summary of each country it would be amazing. Its the only q I have left on this assignment.
July 23, 2012

Science
1.The estimated doubling time for the black sea urchin population is approximately 1.5 years. What is the annual growth rate of the urchin? help please?
June 29, 2012

Chemistry
A student completes titration by adding 12.0 mL of NaOH(aq) of an unknown concentration to 16.0 mL of 0.15M HCl(aq). what is the molar concentration of the NaOH(aq)?
June 7, 2012

Social Studies
The last of Wilson's fourteen points called for
June 1, 2012

Chemistry
Thanks!
May 30, 2012

Chemistry
Find the molarity of [H+] and [OH-] in the following solutions: a) 0.050 molar NaOH b) 2.09g of calcium hydroxide in 100 mL of water c) 0.875 M H2SO4
May 30, 2012

Chemistry
That is super helpful, thanks. I missed a two days of class when we learned acids and bases, so I was a bit stuck.
May 30, 2012

Chemistry
100.0 mL Vinegar (d=1.06g/mL) contains 4% acetic acid. a. How many moles of acid are in 100 mL of vinegar? b. How many mL of 0.11 M NaOH are required to neutralize the vinegar?
May 30, 2012

Chemistry
Alright, sure. #9. 2H2O -> 2H2 + O2 15g H2O/1 x 1mol/18.02 = 0.832 mol H2O PV=nRT (98.9kPa)(v)=(0.832mol)(8.31 kPaxL/molxK)(290.2K) v=20.29L #11. 12.01g/gC x 100=49.48% 24.27gC/1 x 1mol/12.01g=2.02mol C 1.01g/gH x 100=5.15% 19.61gH/1 x 1mol/1.01g=19.42mol H 14.01g/gN x 100=...
May 30, 2012

Chemistry
Test corrections :) They're calculations/short answers. I'd just like something to compare answers to or help me get the full answer (all partial credits). Thanks! #9. When water is electrolyzed it produces hydrogen and oxygen. If 10.0% of 150.0g of water is ...
May 30, 2012

Chemistry
It's a molar heat reaction lab. 0.07g Mg Mg+2HCl->MgCl2+H2 What is the actual value for the heat of reaction based on the enthalpy's of formation? HfHCl= -118.53 kJ/mole HfMgCl2= -774 kJ/mole
May 15, 2012

A Stop Sign
is it an index, symbol or an iconic sign?
April 25, 2012

History
I'm doing a project on name change in south africa so I'd like to know why the name pretoria was changed to tshwane and why did they change it to tshwane??? and why Pietersburg was changed to polokwane and why did they change it to polokwane
March 21, 2012

Biology Science
Plankton, Fish, Crab, Shark. Plankton, Crab, Fish, shark. Depends on which fish and which crab. XD
March 5, 2012

english
There are many situations where one should say no. For example, imagine if a clumsy, crazy, annoying, creepy, stranger asks you on a date. Even though you don’t want to hurt his feelings just say no would this be an okay way to start?
March 4, 2012

english
I need ideas on how to start the paragraph.
March 4, 2012

english
I need help writing an illustration paragraph on the topic: saying no. I have to include the following devices 1 acyndeton, 1 polysyndeton, 2 interrupted movement, 2 parallel, 1 freight-train
March 4, 2012

Business Studies
I'm Studying For My Business Cycle Test and I'm finding it for hard to remember all the elements of the micro market and market environment so I was just hopeing someone could have like a catchy sentence for the elements in each environment e.g takeing the begining ...
March 4, 2012

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