Thursday
August 21, 2014

Posts by MW


Total # Posts: 53

physics
How deep can a snorkel diver dive if the maximum gauge pressure on the thorax cannot exceed 10.9 kPa? Hint: density of seawater = 1.015g/cm3
February 7, 2012

chemistry
The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.42 x 10e-6 m that must be absorbed to melt 2.00 g of ice.
November 13, 2011

home economics - PLS help
Need help with some economics problems and wondering if anyone can help. 1- ) Consider a farmer who has access to a bond market where she can borrow or lend at the interest rate R. Assume also that her money holdings (nominal balances) and the price level stay constant over ...
September 28, 2011

Algebra
A spherical scoop of vanilla icecream with radius of 2 inches is dropped onto the surface of a dish of hot chocolate sauce. As it melts, the icecream spreads out uniformly forming a cylindrical region 8 inches in radius. Assuming the density of the icecream remains constant, ...
January 14, 2011

algebra
The overnight low temperature was -5 centigrade. If the temperature rose 18 degrees during the following day, what was the number of degrees centigrade in that day's high temperature?
January 14, 2011

algebra
Find the number of degrees in the measure of one of the base angles of an isosceles triangle, if the measure of the vertex angle is 36 degrees less than the sum of the measures of the base angles.
January 14, 2011

algebra
How many cubic feet are inthe volume of a round swimming pool which is 16 feet in diameter and 4 feet deep throughout? Express your answer in tterms of pi.
December 16, 2010

algebra
Six people are going to be seated in a row of 8 chairs. How many different ways may they be seated?
December 16, 2010

algebra
Two runners jog around an oval path at constant rates, but in opposite directions. One runner completes a lap every 10 minutes, and the other does a lap every 12 minutes. how many minutes elapse between consecutive meetings of the runners? Express your answer as a mixed number
December 16, 2010

Chemistry
There are no units after 1.088 in the problem it just says a specific gravity of 1.088 at room temperature.
September 13, 2010

Chemistry
I need help setting up this problem: Ethylene glycol has a specific gravity of 1.1088 at room temperature, What is the volume of 1.00 kg of ethylene glycol? What is the volume of 2.00 lb of ethylene glycol? Using 25 degrees Celsius.
September 13, 2010

Physics
What three things are required to produce voltage? These three things are the fundamentals of how an electrical generator works.
May 17, 2010

Algebra1
The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground. (Hint: Include correct units in your final answer.) (3 points) pleas show me how you got the answer. Thank you:)
May 2, 2010

Calculus
I have a parametrization for a curve.. x = 5 cos t y = 2 sin t I made the graph... its initial point is (3,0), and curves up and to the left. So, I have my points for the graph. How do I come up with the cartesian equation?
September 6, 2009

Calculus
Determine if function is even, odd, or neither... f(x) = secx tanx I understand how to find if its even or odd, but the sec and tan, I dont understand. Can someone help?
September 6, 2009

Stats
Five chips numbered 1-5 are placed in a jar. Two chips are drawn. Let Z= the sum of the numbers. WHat is the expected value of the random variable? I know I have to use E = np Can someone explain?
May 26, 2009

probability
Seven chips labeled A B C D E F and G are placed in a jar. Five chips are drawn at random. Find the probability thatc chips A and B are selected.
May 21, 2009

Pre Calc
I am sorry, base 3.. log base 3 of (2x)
May 17, 2009

Pre Calc
I need to graph the function, y = log(root 3)2x I did...now I need to graph the inverse. What is that?
May 17, 2009

Pre Calc
To find the number of factors of a number, you get the prime factors and add one to each exponent, then multiply all the exponents. I know how to get that, but I am wondering why you add one. Mathmatical explanation? Can anyone help?
May 12, 2009

pre calc
log(x)(1/16) = -4/3 this means... x^(-4/3)= 1/16 so...the -4/3 root of 1/16... I need to get it in simplest form.
May 10, 2009

Pre Calc
ok. I have side A. How do you find angle B?
April 13, 2009

Pre Calc
In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?
April 13, 2009

Pre Calc
how do you find that? I have the angle measurments, but no side lengths. Except for 400..
April 13, 2009

Pre Calc
From 2 points 400 yards apart on the bank of a straight river flowing due south, the bearings of a point on the opposite bank are 148 degrees and 28 degrees. How wide is the river? I am having a hard time understanding how this is set up. Help please?
April 13, 2009

Pre Calc
lim x approaches 0 [1/x *((1/(sqrt(1+x))-1)] It will be easier to understand if you write it out.. How would I algebraically do this? (The answer is -1/2) Help please?
March 18, 2009

Pre Calc
Simplify (n+1)!/(n-1)! Help please?
March 15, 2009

Pre Calc
Find the geometric sequence with t(5)= -2 and t(7)= -8 find a How do I do this?
March 15, 2009

Pre Calc
How do I do this?... Sq Rt[(9*Sq Rt(3x^2))]
March 14, 2009

Pre Calc
For the sequence, write an explicit formula for the nth term. 1/5, 2/7, 3/9, 4/11... I dont know how to start. I have other sequences also, so I need to learn, not just get the answer. Thank You
March 4, 2009

Algebra
I am given an equation.. x^2-y^2-2x-6y = 8 Move things around... (x^2-2x)-(y^2-6y) = 8 I need to find out what kind of graph this makes. How do I do this?
February 17, 2009

Pre Calc
|2t-3| = |2t| - |3t| ( || = Absolute Value) I squared both sides to get... (4t^2)-12t+9 = t^2 Factored to... (t-1)(t-3) = 0 My book says "Empty Set" for the answer. What am I doing wrong?
February 5, 2009

Chemistry
I have 250 grams of Al2(PO4)3 How many moles of Al are there?
January 5, 2009

Physics
An object with a mass of 49 N falls out of a plane going 20.0 m/s at 300 m above the ground. 1)How do I find the time that the object is in the air? 2)The horizontal distance of the object? Could someone help me out?
January 4, 2009

English
I am writing a paper in APA. When I get some info from a website, what do I put in parentheses? I can't find a name.
December 31, 2008

English
When writing a paper in APA, can you copy some exact words from someones website,as long as you site them right afterwards?
December 29, 2008

Writing a Paper
For my paper, I want to write this exact phrase from a book: "Panic attacks are specified periods of sudden onset of intense terror...." This is an exact sentence in a book. I need to site this right after the sentance or group of sentances from this book. How do I ...
December 29, 2008

Writing Paper
I am writing a paper on panic disorder. I want my opening paragraph to show an example of a panic attack. Should I start it with- "Imagine taking a walk on a beautiful summer day....then all of a sudden your heart is racing..ect." I am going to talk about what you ...
December 29, 2008

Writing Paper
I am writing a paper on Panic Disorder. I need three scholarly journal articles. Im not exactly sure what this is, so can someone help me? Maybe even find me an example of one on panic disorder? Thanks
December 29, 2008

US History
So, Jefferson and Madison founded the Democratic- Republican party, and these are some of their principles?... -Opposed federalissts -Opposed Jay treaty -Supported good relations with France -Strict constitution -Opposed hamiltons principles -Favored low taxes, states rights, ...
December 28, 2008

US History
I have a question on the republican principles applied by Jefferson and Madison during their presidencies. Can someone help me out on what they mean by "republican principles"? thanks
December 28, 2008

US History
What contributions did Adams make to help establish a stable government after the adoption of the constitution? Well, he did not want to support France in the Revolution. Can someone help me out please?
December 28, 2008

Physics
Why is the momentum in a spaceship traveling in space not conserved? Can someone please expain? thanks
December 16, 2008

US History
Evaluate the extent to which the Articles of Confederation were effective in solving the problems that confronted the new nation. After the revolution, this gave the states freedom and independence. There was a comitee of delegates of representatives from each state. Maybe ...
December 16, 2008

US History
Can you kind of tell me what they are looking for? What the presidents contributed to the constitution?
December 13, 2008

US History
Compare and Contrast the effectiveness of Washington's and Adams' presidencies in obeying and promoting the Constitution during their administrations. Can someone help me out please?
December 13, 2008

US history
What were the French motivations to explore the new world?
October 27, 2008

US History
I have written a small essay on this question: Compare the ways in which religion shaped the development of colonial society in the New England and Chesapeake regions. Here is what I wrote. Could someone read it and tell me if it is correct, and maybe add some comments? please...
September 30, 2008

Biology: Evolution
Scientists suggest that two energy sources, __________ and __________, broke the bonds in the gases in Earth's primitive atmosphere, releasing atoms to form __________. Help! I forgot my book at school! Please!
May 18, 2008

Statistics
If I have 4 standard deviations, how do I find the SD of the distributions of all of them? They are: .15 .16 .14 .15
May 4, 2008

History
1)Why might the US have been concerned early in the war about China's attitude toward US involvenemt on the south side of vietnam? 2) What might have been the effect on the vietnam war if the border of Laos had been closed and N. Vietnam had not been able to operate in the...
May 4, 2008

History
We have to do little projects. I need some ideas, im not very creative. 1)Write the "perfect" forged pass to get back into US History after ditching that class. any ideas?
March 31, 2008

History
Could you say the cold war was like walking on thin ice...they were close to "breaking" through to war? How could I make a good phrase like this? thx
March 30, 2008

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