Tuesday
October 21, 2014

Posts by Sanya


Total # Posts: 57

physics
an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of 144km/h . what is the average speed of whole journey in m/s?
June 25, 2014

physics
An aeroplane taking off from a field has a run of 500 meters. What is the acceleration and take off velocity if it leaves the ground 10 seconds after the start ?
June 12, 2014

Chemistry
Thank you Dr. Bob! :)I had that but it seemed too simple to be true. I didnt have my text to verify.
November 5, 2013

Chemistry
Write the Ka reaction for formic acid, HCO2H, and for methylammonium ion, CH3NH+ 3 . How do I approach this?
November 5, 2013

Honors Physics- Help PLEASE- Test tmrw
A tritium nucleus is formed by combining two neutrons and a proton. The mass of this nucleus is 9.106 × 10–3 universal mass unit less than the combined mass of the particles from which it is formed. Approximately how much energy is released when this nucleus is formed?
June 4, 2013

Maths
The dimensions of rectangle B are twice the dimensions of rectangle A. The area of rectangle B is 200 cm2. What is the area of rectangle A?
April 4, 2013

Maths
For a Chinese New Year celebration, James and Zhou are making a dragon costume similar to the one shown above. In total, the costume requires 58.6 meters of fabric. Zhou already has 11.5 meters of fabric, and James just purchased 20.2 meters of fabric. How much more fabric is ...
April 1, 2013

Maths
During the month of January, temperatures can decrease by 18° per week. If this happens, and the temperature on January 12th was 9°, what is the temperature on January 19th?
April 1, 2013

Math
Tonya took out a loan to help pay for her house. She borrowed $50,000 for 15 years at a yearly simple interest rate of 5%. How much interest will she end up paying the bank?
April 1, 2013

SAT Essay
Mainly directed to Mr. Pursley and Write Teacher but feel free to critique! Thank you so much. Assignment: Do you think that ease does not challenge us and that we need adversity to help us discover who we are? Plan and write an essay in which you develop your point of view on...
November 30, 2012

SAT Essay
Thank you.
November 29, 2012

SAT Essay
Please critique and let me know how it is and what I can improve. Thank you! Assignment: Do you think that ease does not challenge us and that we need adversity to help us discover who we are? Plan and write an essay in which you develop your point of view on this issue. ...
November 29, 2012

AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2 - 4x^2)/(9y^3) except they took it a bit further. notice your numerator is -4x^2 + 6y^2 from the original 2x^2 - 3y^2 = 4 , then 4x^2 - 6y^2 = 8 , and -4x^2 + 6y^2 = -8 to get their -8/9y^3 If you were...
November 6, 2012

AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2 - 4x^2)/(9y^3) except they took it a bit further. notice your numerator is -4x^2 + 6y^2 from the original 2x^2 - 3y^2 = 4 , then 4x^2 - 6y^2 = 8 , and -4x^2 + 6y^2 = -8 to get their -8/9y^3 If you were...
November 6, 2012

AP Calc
I need to find the second derivative for this: 2x^2-3y^2=4 I understand all the steps but for some reason I get the wrong numerator. I get (6y^-4x^2)/9y^3 The answer is -8/9y^3
November 6, 2012

AP Calc
I need to find the second derivative for this: 2x^2-3y^2=4 I understand all the steps but for some reason I get the wrong numerator. I get (6y^-4x^2)/9y^3 The answer is -8/9y^3
November 5, 2012

Chemistry
Positive and negative- in the sense things should cancel and charges should inc. and dec.
November 4, 2012

Chemistry
What is your charge for Au? There has to be a positive and negative- check your equations- that answers then may not apply.
November 4, 2012

Chemistry
The first rxn is reduction. Au went from +3 to 0 so higher to lower number (became more -ve) Na is oxidized. went form 0 to +3
November 4, 2012

Pre-calculas Math
9pi/12 should be converted into degrees. The value of pi is 180 so all you do is 180 times 9 divided by 12 and then take the cosine of that value.
November 4, 2012

Critiques cont'd
So, if I spend about 5-6 minutes planning what else would I write except for a couple of bullet points about my two main examples? Would it just be this: ex1: _____ -something -something ex2: _____ -something -something Is that it? Also, I think I need help as Mr. Pursley ...
November 4, 2012

SAT Essay Critiques
So, if I spend about 5-6 minutes planning what else would I write except for a couple of bullet points about my two main examples? Would it just be this: ex1: _____ -something -something ex2: _____ -something -something Is that it? Also, I think I need help as Mr. Pursley ...
November 4, 2012

SAT Essay Critiques
For the essay we are only given 25 minutes, so my only planning is when i write what my examples will be. That's the only thing I write in the test booklet : ex1: _____ ex2: _____ And that's it. And also, for my conclusions- I usually don't know how to wrap it up. ...
November 4, 2012

SAT Essay Critiques
Mr. Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much, I really appreciate it.
November 4, 2012

SAT Essay
Mr. Bob Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much.
November 4, 2012

SAT Essay
comments possibly?
November 3, 2012

SAT Essay
Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations Essay: Knowledge can ...
November 3, 2012

calculus
when you take the derivative of something for exaple y = 3x^3 +2x^2+3 it's y' = 9x^2 + 4x the equation y' is the derivative of the original equation- which was cubic- the derivative becomes quadratic.
November 2, 2012

SAT Essay
Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations Essay: Knowledge can ...
November 2, 2012

SAT Essay
Okay thanks for feedback. Should I have given, I guess, real life examples of issues today? Also, what other sort of higher authority should I have written about? Something less than government, like maybe the school's principal, or boss at work? Thanks.
October 31, 2012

SAT Essay
Assignment: Is it important to question the ideas and decisions of people in positions of authority? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, ...
October 31, 2012

SAT Essay
Thank you so much sir. I have another essay to post shortly. I have trouble with conclusions. I do not know how to properly start the conclusion off. I didn't want to write , "in conclusion" or "to wrap it up" I just don't what to do for that. Also...
October 31, 2012

SAT Essay
Can someone please critique my essay? Thank you! Assignment: Should people take more responsibility for solving problems that affects their communities or the nation in general? Plan and write an essay in which you develop your point of view in this issue. Support your ...
October 31, 2012

SAT Essay
Can someone please critique my essay? Appreciate it.
October 30, 2012

SAT Essay
Assignment: Should people take more responsibility for solving problems that affects their communities or the nation in general? Plan and write an essay in which you develop your point of view in this issue. Support your problems with reasoning and examples taken from your ...
October 30, 2012

MATHHH!!!! PLEASE HELP
setup a table for both trains one at x other at x+12 total distance 174 time 1.5 hours
October 24, 2012

SAT Essay
Thank you
October 24, 2012

SAT Essay
The essay is out of a six, so it's still a four with the mechanical errors?
October 24, 2012

SAT Essay
Assignment: Is there such a thing as success without sacrifice? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations. Essay: It is very ...
October 24, 2012

SAT
Okay thank you so much for your feedback sir.
October 24, 2012

SAT
May I post another essay please?
October 24, 2012

SAT
I also have another essay. do you mind reading it? I really appreciate you taking the time out to give me feedback. Thank you so much.
October 24, 2012

SAT
So, it would be better if I continued to reinforce the point that it IS IMPORTANT to move on and basically what I said in the last sentence, repeat (but in different words) throughout the essay?
October 24, 2012

SAT Essay
Assignment: Is it important for people to let go of the past? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations. Letting go of the past ...
October 24, 2012

SAT
Can someone critique an SAT Essay that I post? I would really appreciate it. Thanks.
October 24, 2012

SAT
Can someone critique an SAT Essay that I post? I would really appreciate it. Thanks.
October 24, 2012

physics 231
A 84-kg fireman slides down a 4-m pole by applying a frictional force of 416 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground?
February 9, 2012

physics
A 84-kg fireman slides down a 4-m pole by applying a frictional force of 416 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground?
February 9, 2012

physics
An experiment was done in which different coloured light were shone onto a water plant seperately and the rate of production of oxygen was measured. which coloured light will produce the lowest rate of production of oxygen? explain your answer
January 30, 2011

chemistry
How many grams of NaOH should be dissolved in 1 litre of solution to prepare a solution with pH value12
June 2, 2010

Calc
how do I do this: given g(x)= x^2/3x+2 determine any x values for which f(x)=1/2. I really don't understand what to do.
November 2, 2008

math
when solving the exponential equation, 2^2x-1=16 what do I do first? do I convert to a log equation?
October 27, 2008

MATH
f(x)=2x^2-4x how do you find the x and y intercepts? Are these answers correct: orientation: parabola opens up Vertex: (1,-2) Axis of symmetry: 1
October 15, 2008

Math
is the answer 2x+h+2
October 14, 2008

Math
no wait...I did that wrong. I forgot a step.
October 14, 2008

Math
I got 8x+2h is that correct?
October 14, 2008

Math
How do I find the difference quotient f(x)=2x^2-4x
October 14, 2008

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