Wednesday
August 20, 2014

Posts by matt


Total # Posts: 1,763

math
i need to put it in order i think it is 3.56 and then 3.546
August 26, 2010

math
which number is greater 3.546 or 3.56
August 26, 2010

physics
a ball with a mass of 0.150 g and positive charge of q=41.2 C is suspended on a string of negligible mass in a uniform electric field. We observe that the ball hangs at an angle of =22.0o from the vertical. What is the magnitude of the electric field?
August 25, 2010

chemistry
what is the pH of the buffer when 4ml of 1M HCl is added to a 100ml buffer solution made using 5ml 1M Na2HPO4 and 5ml 1M NaH2PO4? The pKa for H+ + HPO4- ==> H2PO4 is 6.82. What would happen to the pH if the 100ml buffer had been made up at the starting pH (6.82) using Tris...
August 23, 2010

chemistry
What happens when 4ml of 1M HCL is added to 100ml buffer made using 5ml 1M Na2HPO4 and 5ml 1M NaH2PO4? The pKa for H+ + HPO4- = H2PO4 is 6.82.
August 17, 2010

economics
This statement is incorrect, when price decreases and demand is relatively elastic, revenue (and expenditure) will rise.
August 14, 2010

math
how can fisherman save gas
August 6, 2010

English-Literature
b grave
July 27, 2010

Physics
A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as it reaches the ground below the cliff. m/s (b...
July 24, 2010

Chemistry
3.40848g. I put this in and it was right.
July 24, 2010

math
The volume of a cone is three hundred cubic kilometers. If the radius of the base is 9 kilometers, what is the height of the cone? Use three point one four for pi. Show your work and round to the nearest tenth.
July 22, 2010

Chemistry
A sample of sodium-24 with an activity of 12 mCi is used to study the rate of blow flow in the circulatory system. If sodium -24 has a half-life of 15 hours, what is the activity of the sodium after 2.5 d ?
July 20, 2010

Physics
A 1.00 kg particle has the xy coordinates (-1.20 m, 0.500 m) and a 3.00 kg particle has the xy coordinates (0.600 m, -0.750 m). Both lie on a horizontal plane. At what (a) x and (b) y coordinates must you place a 1.00 kg particle such that the center of mass of the three-...
July 20, 2010

Math
How do you find the perimeter and area of a right triangle?
July 18, 2010

Chemistryy
14g I put it in and it's right.
July 13, 2010

Science
If Frankie the kangaroo climbed out of the crate and pushed the crate with a mighty 12 newtons of force against the efforts of Fred and the man (each applying 10 newtons of force), what would be the net force on the crate from all the pushing? 0 newtons *8 newtons 10 newtons ...
July 13, 2010

Science
Please Check 1.) If a quantity increases as a second quantity increases and decreases as the second quantity decreases the two quantities are said to be *a)Directly proportional b)Inversely proportional c)Completely unrelated d)Blue and red 2.) If a quantity increases as a ...
July 13, 2010

Chemistry
How much ammonia is produced if 1.80 m3 of hydrogen reacts with 0.5m3 of nitrogen? Also state which reagent is in excess and by how much? Question is related to the Haber process. Please can anyone answer this for me by 02 July 2010. With all equations. Thanx
June 30, 2010

chemistry
Thank you. :)
June 30, 2010

History
1.)Under the Articles of Confederation, _____. a)coordination among the States was difficult *b)Congress held both legislative and executive authority c)the national government could not force the States to obey its laws d)All of these answers are correct. 2.)Rhode Island ...
June 26, 2010

ECONOMICS
The question is is it T or F (true or false).
June 22, 2010

Government
1. a.)Absolutism,constitutional monarchy 5. c.)a direct democracy
June 20, 2010

Government
*= my answer 1. _____ is closely related to _____. a.)Absolutism,constitutional monarchy b.)Revolution, figurehead c.)Socialism, communism *d.)Authoritarianism, democracy 2. Popular sovereignty is _____. a.)the idea that the people are the ultimate source of authority b.)a ...
June 20, 2010

English/Reading
so I will change #6 to unsound opinion because it doesn't sound reliable.
June 13, 2010

English/Reading
Read the following statements and then determine whether they are facts, unsound opinions, sound opinions, or authoritative opinions. Select the correct answer for each statement. Are any of these correct/incorrect? If so please help. 1.)Due to Einstein's findings in the ...
June 13, 2010

math
1.) Write the equation for the line in slope-intercept form:Slope: m=3; Y-intercept: B=7 *y - 3 = 7(x - 3) *y = 3x + 7 *y = 7x - 3 2.)Write the equation for the line in slope-intercept form: Slope: m=4/3; Y-intercept: b=-2 *y = 4/3x - 2 *y + x = 2x + 1/2 *y = 1/2x - 2 3.)Which...
June 12, 2010

Geo (locus)
I don't fully get this stuff but some of these I guessed on and some I think I;m close so will someone check/ help me please? * is the answer I put 1. Point A is 0.5 cm from j. k and k are parallel and 1 cm apart. Find the locus of points that are 0.75 cm from A and ...
June 12, 2010

College Physics
A rock thrown horizontally at a large bell 54.0 m away is heard to hit the bell 4.80 s later. If the speed of sound is 330 m/s, what was the speed (in meters/second) of the rock? (Disregard gravity.)
June 9, 2010

Science
what is the molarity of a solution made by dissolving 7.5 g of magnesium nitrate in enough water to make 25.o mL of solution
June 1, 2010

algebra
write as an algebraic expression. 4 times the difference of a number and 3?
June 1, 2010

science
how many joules are required to evaporate 1 gram of boiling water?
June 1, 2010

trig
If (-2,5) is a point on the terminal side of an angle theta, find the exact value of the six trigonometric functions of theta. Then find the actual measure of theta.
May 27, 2010

Algebra
Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?
May 27, 2010

aLGEBRA
Find the domain of the function g(x)= 1/6-5x I know that x is a real number but I need the domain please.
May 27, 2010

aLGEBRA
Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?
May 27, 2010

math
Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?
May 27, 2010

Math
Find the domain of the function g(x)= 1/6-5x I know that x is a real number but I need the domain please.
May 27, 2010

Math
On top of the sears building is a tv tower. From a point 300 ft away the bottom of the tower is at an angle of elevation equal to 42.14 degrees and the top of the tower is at an angle of elevation equal to 45.81 degrees. How tall is the tower.
May 19, 2010

Math
On top of the sears building is a tv tower. From a point 300 ft away the bottom of the tower is at an angle of elevation equal to 42.14 degrees and the top of the tower is at an angle of elevation equal to 45.81 degrees. How tall is the tower.
May 19, 2010

algebra
X^2-2X-1 is the complete answer see site above for example
May 15, 2010

algebra
4x^3-5x^2-10x-3 divided by 4x+3
May 15, 2010

algebra
one clerk can stuff every 30 seconds the 2nd clerk i every 40 seconds. how long will it take them to stuff 140 envelopes
May 13, 2010

Chemistry
74.38L
May 12, 2010

math
Write the following series using sigma notation: (x/3)-((4x^2)/9)+(x^3/3)-((16x^4)/81)+((25x^5)/243)-...
May 9, 2010

english
can fear be the mood of an essay iff not can you give me examples of the mood of an essay
May 8, 2010

word study
ship is to trip as shout is to
April 29, 2010

chemistry
How do you make a 100mL solution of 1.50 M of NaCl.
April 29, 2010

college
2039 km = 2039000 NOTE: Projectile motion signifies an x and y displacement, but let us assume this pertains to the freefall laws of motion. Top of the trajectory: Vf = 0 Vf^2 = Vo^2 + 2gy 0 = Vo^2 + 2(-9.81 m/s^2)(2039000 m) V0^2 = 4.00052*10^7 m^2/s^2 Vo = 6324.97 m/s
April 29, 2010

Chemistry
In studying the chemistry and qualitative analysis of anions, why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid solution?
April 29, 2010

Chemistry
3. M = Molarity = mols per liter 0.85 M NaCl is equal to 0.85 mols/L You have 100 ml. (0.85 mol/L)(0.1 L) = 0.085 mol of NaCl In other words, add 0.085 mols of NaCl to the 100 ml solution. OR add (0.085 mol NaCl) * (58.44 g NaCl/molNaCl) = 4.9674 grams NaCL Add 4.97 g NaCl to ...
April 29, 2010

chemistry
how to make a 100 mL solutino of 1.50M of NaCl
April 28, 2010

algebra
Get y-intercept when x=0 g(x) = y = 2(0)^2 + 3(0) - 1 (0,-1) ; y-intercept = -1 x-intercept: set function equal to 0 2x^2 + 3x - 1 = 0 After quadratic equation... x-intercepts: x = -1.78, and x = 0.28 function to the 2nd power of x, so is a parabola opening upwards. Graphing ...
April 28, 2010

Accounting
If the owner of a company invests personal funds into his company, where does that fit into the balance sheet. I know the cash will increase, but I don't know how it put it in the equity section. For example, If Greg Jones invests $2000 into his company, would to equity ...
April 27, 2010

Accounting
If the owner of a company invests personal funds into his company, where does that fit into the balance sheet. I know the cash will increase, but I don't know how it put it in the equity section. For example, If Greg Jones invests $2000 into his company, would to equity ...
April 27, 2010

Accounting
If the owner of a company invests personal funds into his company, where does that fit into the balance sheet. I know the cash will increase, but I don't know how it put it in the equity section. For example, If Greg Jones invests $2000 into his company, would to equity ...
April 27, 2010

Physics
In using a slide wire potentiometer, show a proof for the equation Vx = Cx where V = the voltage drop, and C = the position along the slide wire potentiometer.
April 26, 2010

Chemistry
I have the Ksp. BaSO4 is 1.1 x 10^-10 and BaF2 is 1.8 x 10^-7 but what do you mean calculate (Ba^2+) needed to ppt BaSO4 and BaF2? how do you do that? that's the part i dont understand.
April 26, 2010

Chemistry
if an aqueous solution of BA(NO3)2 is added to 1.0 L of a solution containing 0.05 mol F- and 0.075 mol SO4 2-, which salt will precipitate first?
April 26, 2010

math
a^2 + b^2 = c^2 90^2 +b^2 = 150^2 b^2 = 150^2 - 90^2 b = (150^2 - 90^2)^1/2 a number raised to the 1/2 is the same as the sq. route of that number. Just easier to write with the keyboard. b = 120
April 26, 2010

Accounting
In the general journalizations, those funds are entered as cash for the debit, and capitol for the credit
April 26, 2010

Accounting
When the owner of a company invests his personal funds into the business, would it be entered as a credit to his drawings in the Ledger or would it be entered in a new column under the company's revenue?
April 26, 2010

Physics
For voltage variation with length, in using a slide meter, the wire resistance varies linearly with length as Rx = resistivity/Area. Since the voltage and resistance are related with ohm's law, Vx= iRx, the current is the same alog all pts. along the slide wire. The ...
April 26, 2010

math
$33.80 * 2.5% 33.8 * 0.025 = 0.845 = 0.85 $33.80 - $0.85 = $32.95 Depending on where you round.
April 26, 2010

Physics
What is the proof for voltage versus length in the equation V=Cx?
April 26, 2010

Math
Find the common denominator: 2 5/6 = [(2*6)+5]/6 = 17/6 8/3 = 16/6 17/6 - 16/6 = 1/6 Therefore, 1/6 must be added to 8/3 to make 2 5/6.
April 26, 2010

Statistics
12% of voters in a recent election voted on the greens candidate, if 10 people were randomly selected what is the probability that exactly 4 people voted for the green candidate.
April 20, 2010

trig
how do you use doubel-angle formulas to find sin, cos, and tan
April 17, 2010

chemistry
Well, this is a really late post lol. But to find the qcalorimeter, you must use the equation... qcalorimeter = Csp + (delta)T (delta)T is the same as what you used for qwater Csp -> you calculated this earlier in lab. "average heat capacity of the calorimeter" ...
April 6, 2010

accounting
John wants to dissolve his business.His balance sheet shows assets with a value of $250,000 in total. Liabilities are shown at 200,000 leaving equity of $50,000 for John.He only expects to get $180,00,000 for his assets when he sells them because some fixed assets are old and ...
March 30, 2010

computer science
Write a program that will input an item’s wholesale cost and its markup percentage. The program will output the item’s retail price. The program should repeat for several input values. For example, if an item cost is 5.00 and markup is 100%, then the retail price is ...
March 30, 2010

language arts
What is a high shrill sound ending with wh
March 24, 2010

Physics
1. A pair of narrow, parallel slits separated by a distance of 0.408 mm are illuminated by green laser light with wavelength of λ = 537.5 nm. The interference pattern is observed on a screen 1.56 m from the plane of the parallel slits. Calculate the distance from the ...
March 23, 2010

Trig
I'm really having a hard time determining an equation for a pendulum problem. It has to be in the form H(t)=asin[b(t-c)]=d. I've already determined a=25, d=30 and b=pi/14 but I can't figure out how to get c (the phase shift). How do I figure out the phase shift in ...
March 23, 2010

Math
Could someone please help with this question. State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y = 2sec(-2x + 180°) + 3 in the following way. 1)graph y=sec(x) 2) apply a horizontal compression by a factor of 1/2. 3) apply a vertical ...
March 21, 2010

Math
Thank you very much!
March 16, 2010

Math
Can someone please explain (cos(x)+sin(x))/(cos(x)-sin(x)=sec(2x)+tan(2x). I have no luck with this. Thanks
March 16, 2010

Physics
A small, nonconducting ball of mass m=1.0mg and charge q=2.0*10^-8 C (distributed uniformly through it's volume) hangs from an insulated thread that makes an angle theta = 30 degrees with the vertical, uniformly charged nonconducting sheet. considering the gravitational ...
March 15, 2010

Physics
Damon, I think you made an arithmetic error here: 3.75 m g = 44.5 d^2 - .85 m g 44.5 d^2 = 2.90 m g It should be 44.5d^2 = 4.6 m g Then solve from there, I made that change and got the right answer.
March 13, 2010

Auditing
lool no one will answer all the questions for you over here..google termpapergurus..they will do your hw for you :) its really neat
March 11, 2010

Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area? Please help me find the COMPLETE dimenssion of the box.
March 11, 2010

Math
what are the complete dimensions?
March 11, 2010

Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?
March 11, 2010

math
What is the answer to t=100(n+3)? Solving for N.
March 8, 2010

physics
In a daring rescue by helicopter, two men with a combined mass of 172-kg are lifted to safety. (a) If the helicopter lifts the men straight up with constant acceleration, is the tension in the rescue cable greater than, less than, or equal to the combined weight of the men? ...
March 8, 2010

Math
State domain, range, period, vertical asymptotes, zeros, symmetry and y-intercept of y = -2tan(3x + 180°) + 3 I just need to know if there is a formula to find the vertical asymptotes, symmetry, and zeros or do I have to solve it graphically. Thanks.
March 5, 2010

Calculus
How do you take the derivation of the following function and equate to zero? sqrt of (100t^2-320t+400).
March 2, 2010

Physics
1325N
March 1, 2010

science
How does oxygen production relate to the rate of photosynthesis?
February 24, 2010

Earth Science
If the continental crust were thinner than its average thickness of 40 km, would it depress the mantle more or less than it does now? Explain.
February 23, 2010

calculus
Let A(x) be the area of the rectangle inscribed under the curve with vertices at (-x,0) and (x,0), x > 0. a. Find A(1). b. What is the greatest value of A(x)? Justify your answer. c. What is the average value of A(x) on the interval 0 < x < 2?
February 23, 2010

earth
the area around the great lakes was once covered by thick sheets of ice. Use the principal of isostasy to explain how the melting of these ice sheets has effected the land around the lakes?
February 23, 2010

Precalculus
Find dy/dx if y= (6x sqrt(x^3) (-2(cubic root of x+ pie^4).
February 23, 2010

Math
The coordinates of P are (-2,5) the coordinates of Q are (6,1). What is the equation of the perpendicular bisector of PQ? *I was able to figure out that the slope of line PQ is -1/2 and the equation of PQ is -1/2x+4=y
February 21, 2010

Physics
88.2N and UP
February 20, 2010

College physIcs
45
February 19, 2010

computer science
THANKS! but how would I do the second part? "Modify the program so it calculates and displays the amount of money Packaage A customers would save if they purchased Packages B or C, and the amount of money Package B customers would save if they purchased Package C. If ...
February 15, 2010

computer science
I need help with my Java homework! Write a program that calculates a customer's monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display the charges. ...
February 15, 2010

computers
Determine the functional dependencies that exist in the following table; then convert this table to an equivalent collection of tables that are in third normal form: Marina, (MarinaNum, Name, (SlipNum, Length, RentalFee, BoatName) ) *Note MarinaNum is underlined
February 15, 2010

Chemistry
Thank you for the help DrBob
February 15, 2010

Chemistry
I don't understand these two questions. Any help on how to figure this would be great. Thanks. 1. Write the equation for the decomposition of the hydrate, MgC*XH₂O 2. Write the equation for the decomposition of the hydrate, CuSO₄*XH₂O.
February 15, 2010

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