Saturday

April 19, 2014

April 19, 2014

Number of results: 5,176

**Chemistry**

In the balanced equation for the combustion of 2,2,4-trimethyloctane (C11H24), the coefficient of the organic compound is...the coefficient of oxygen gas is ...the coefficient of carbon dioxide gas is...and the coefficient of liquid water is.
*Sunday, July 8, 2012 at 8:06pm by Anonymous*

**Chemistry**

In the balanced equation for the combustion of CH3CH2OCH2OCH2OCH2CH3, the coefficient of the organic compound is... the coefficient of oxygen gas is… the coefficient of carbon dioxide gas is… the coefficient of liquid water is… hint: in case your view of the formula is ...
*Sunday, July 8, 2012 at 4:23pm by Abby Walker*

**Algebra**

The leading coefficient tells the story. The leading coefficient of a polynomial is the coefficient (number) associated with the variable of the highest power, in this case, x². If the leading coefficient (-2) is negative, it is concave down, i.e. it opens downwards. If ...
*Friday, November 4, 2011 at 5:47pm by MathMate*

**Statistics - Correlation Coefficient/Regression**

y = -15.4 + 14.4x the correlation coefficient is correct because it is geomatric mean of two regression coefficient the second regression coefficient is 0.066428.
*Saturday, June 21, 2008 at 8:35pm by saqib*

**chemistry**

2NaOH + H2SO4 ==> Na2SO4 + H2 In the above equation, the coefficient of NaOH is two (2) while the coefficient of H2SO4, Na2SO4, and H2 are one (1) each. In a math equation, something like 2X + 3Y = 16, the coefficient of X is 2 and the coefficient of Y is 3.
*Wednesday, October 28, 2009 at 12:10pm by DrBob222 *

**Statistics: Calculate a Pearson's r**

Once you determine the correlation coefficient from a Pearson's r, square the correlation coefficient to find the Coefficient of Determination. The Coefficient of Determination shows the strength of the relationship between two variables. The ratio of explained variance to ...
*Tuesday, October 18, 2011 at 3:25pm by MathGuru*

**maths**

You're close. If the leading coefficient (the coefficient of the x² term) of a parabola is negative, then the graph is n-shaped. If the leading coefficient is positive, it is u-shaped.
*Saturday, April 23, 2011 at 11:22am by MathMate*

**math**

The numerical coefficient of -7t² is -7. You obtain the numerical coefficient by removing all variables and the powers, which in this case is t². The sign is part of the numerical coefficient.
*Saturday, July 25, 2009 at 7:11pm by MathMate*

**statistics**

Coefficient of Determination is explained variation divided by total variation (or more simply, the correlation coefficient squared). To find the correlation coefficient, take the square root of .74 for your answer. The Coefficient of Determination shows the strength of the ...
*Saturday, January 31, 2009 at 11:53pm by MathGuru*

**Physics**

A. (Weight) x (kinetic friction coefficient) Remember that weight = M g B. The static coefficient can be any value greater than the kinetic coefficient value. Usually it is 10% to 60% higher
*Tuesday, November 24, 2009 at 10:21am by drwls*

**algebra**

c and d look good The correlation coefficient is a number between 0 and 1. If there is no relationship between the predicted values and the actual values the correlation coefficient is 0 or very low (the predicted values are no better than random numbers). As the strength of ...
*Monday, January 16, 2012 at 7:53pm by Steve*

**Advanced Alg.**

A vertical asymptote is located where the denominator vanishes. In the cited example, the denominator has a zero at x=-1, where the vertical asymptote would be located. The horizontal asymptote, if it exists, is obtained by dividing the leading coefficient of the numerator by ...
*Sunday, March 13, 2011 at 3:19am by MathMate*

**Math**

is coefficient of correlation and coefficient of determination the same thing? or different?
*Sunday, June 12, 2011 at 11:32pm by Thara*

**Math**

is coefficient of correlation and coefficient of determination the same thing? or different?
*Sunday, June 12, 2011 at 11:32pm by Thara*

**MATH URGENT HELP**

In the expression -7x-3x^2+5 what is the coefficient of x? i don't understand what does coefficient is can you help?
*Wednesday, May 22, 2013 at 10:51am by Anonymous*

**maths**

In the expansion of (1-2x)^11 the coefficient of x^3 is k times the coefficient of x^2. Evaluate k.
*Tuesday, August 6, 2013 at 8:00am by Shane*

**maths**

In the expansion of (1-2x)^11 the coefficient of x^3 is k times the coefficient of x^2. Evaluate k.
*Tuesday, August 6, 2013 at 11:50pm by Shane*

**Math**

Coefficients: 7,-3,1,and 2/5. 2/5 is the coefficient of X^0 ; it is called the linear coefficient. Degree = Largest Exponent = 5.
*Saturday, July 16, 2011 at 7:26am by Henry*

**maths**

The coefficient of x^2 is 69 in the expansion of (1-ax)^24, where a>0. Find the coefficient of x^3.
*Thursday, August 8, 2013 at 8:33am by Shane*

**math/stats**

If you square a correlation coefficient and subtract this number from 1.00, what is the result? Is it the coefficient of determination?
*Saturday, February 6, 2010 at 5:01pm by Patty*

**physics**

If my kinetic coefficient and static coefficient are both 1.02, how can I explain why they are the same???? (For a horizontal surface)
*Tuesday, October 22, 2013 at 10:37pm by Miranda *

**physics**

Drag-race tires in contact with an asphalt surface have a very high coefficient of static fric.tion. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
*Friday, February 21, 2014 at 1:14pm by ryan*

**PHYSICS**

6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
*Sunday, February 23, 2014 at 7:10pm by SHAWN*

**algebra**

The question asked for: "Evaluate and simplify in a+bi form:" In any case the "i" is usually put after the coefficient. √2 is considered part of the coefficient.
*Sunday, December 27, 2009 at 5:47pm by MathMate*

**Physics**

A 13.0 kg box is released on a 33 degree incline and accelerates down the incline at 0.20 m/s^2. 1. Find the friction force impeding its notion? 2. What is the coefficient of kinetic friction? *Are we dealing with Kinetic or Static Friction...this will effect coefficient ...
*Wednesday, June 13, 2012 at 10:51am by Mike *

**Statistic HELPPPPPP**

Here are a few hints to help you with some of your questions. Coefficient of Determination is the correlation coefficient squared. To find the correlation coefficient, take the square root of .755 (75.5% converted to a decimal) for your answer. The Coefficient of Determination...
*Monday, March 11, 2013 at 12:05am by MathGuru*

**Chemistry**

When all are gases, we can dispense with moles; L are proportional. From your rough equation, we have Cl2 + F2 ==> xClF 1 L Cl2 reacts with 3 L F2 to produce 2 L product. So the coefficient for Cl2 is 1, coefficient for F2 is 3 and the coefficient for ClF is 2. Now we have ...
*Thursday, April 8, 2010 at 2:00pm by DrBob222*

**Physics**

A trash can with a mass of 5 kg has a coefficient of static friction of μs = 0.80 and a coefficient of kinetic friction of μk = 0.22. (The Active Figure applies to a similar situation, but the values of the mass, coefficient of static friction and coefficient of ...
*Saturday, February 8, 2014 at 3:43pm by Ray*

**math help**

Please help me on these I have lost the tables that I would need to answer them or at least the ones I think are used. Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for ...
*Saturday, June 22, 2013 at 10:41pm by Tommy7*

**Probability**

Roll 3 dice. What is the probability of getting a sum of: A) sum of 7: 15/216 B) sum of 8: 21/216 C) sum of 11: 27/216 D) sum of 12: 25/216 Are these correct? How many ways are there to choose 3 numbers ranging from 1 to 6 such that the sum is N? Consider the function: F(X) = ...
*Friday, February 2, 2007 at 12:29pm by Heath*

**Physical Science**

No. It isn't necessary to make coefficients equal. It is necessary to make the atoms equal. You have 4 H atoms on the left and you must have 4 on the right. The coefficient of 1 is in place now in front of the H2O as in 1H2O. The coefficient multiplies everything after it in ...
*Tuesday, September 11, 2007 at 11:20pm by DrBob222*

**Physical Science**

yes and no. We have 4 H atoms on the left from NH4NO3. We have 2 H atoms on the right (you are correct) from H2O. What can we make the coefficient for H2O to make that 4 H on the right? There is a 1 there now. We want to put a coefficient in front of the H2O so that ? x 2 = 4...
*Tuesday, September 11, 2007 at 11:20pm by DrBob222*

**statistics defns**

What is the coefficient of variation and how do I calculate it from a dataset? coefficient of variation is simply the standard deviation divided by the mean.
*Thursday, March 1, 2007 at 10:45am by weldon*

**Binomal Theorem**

1A> What is the coefficient of x^(2r) in the expansion of (1-x^2)^n, where n is a positive integer ? 1B> Find the coefficient of (1+x)^7 (1-x) ^8 Thanks for your help :)
*Monday, August 4, 2008 at 7:12am by Tommy*

**Math**

Exactly! For example, -3x² is a term, -3 is the coefficient x is the variable,and ² is the exponent. The sign is part of the coefficient.
*Tuesday, May 10, 2011 at 8:12am by MathMate*

**Physics**

Can the coefficient of static friction be greater than one? Less than zero? How about for the coefficient of kinetic friction? Please explain.
*Monday, October 17, 2011 at 3:43pm by A*

**Statistics (partial)**

I don't know about the second question, but the variation accounted for by a correlation coefficient is found by squaring the correlation coefficient.
*Sunday, May 26, 2013 at 8:37am by PsyDAG*

**Physics**

question: do you multiply the coefficient for steel in the equation and the coefficient for brass in a separate equation and add them together to get the answer?
*Monday, May 23, 2011 at 9:31pm by enoh*

**math**

21y has a numerical coefficient and a literal coefficient The word "literal" implies "letter", so .... what do you think?
*Tuesday, October 7, 2008 at 5:31pm by Reiny*

**Math 111**

Find a 4 degree polynomial having zeros -6,-3,2 and 6 and the coefficient of x^4 equal 1 The "coefficient of x^4 equal 1" is really throwing me off. Thanks.
*Saturday, November 5, 2011 at 12:11am by Joey*

**statistic**

If you do this using a calculator, you will have to use the calculator's instructions for finding a regression equation, correlation coefficient (r) and coefficient of determination (r^2).
*Tuesday, December 10, 2013 at 8:49pm by MathGuru*

**physic**

centripetal force=friction force mv^2/r=mg*coefficient solve for coefficient. Notice mass divides out.
*Monday, January 20, 2014 at 8:44am by bobpursley*

**Business Statistics**

I'll give you a hint: Coefficient of Determination is explained variation divided by total variation (which is the correlation coefficient squared). I'll let you take it from there.
*Sunday, March 15, 2009 at 7:49pm by MathGuru*

**maths**

discriminant is b^2 - 4*a*c where a = numerical coefficient of x^2 b = numerical coefficient of x c = the constant in the problem, 4x^2-x-3, thus a = 4, b = -1 and c = -3 substituting (-1)^2 - 4(4)(-3) 1 - (16)(-3) 1 + 48 49 hope this helps~ :)
*Tuesday, March 29, 2011 at 11:20am by Jai*

**math**

Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . (b) Determine the level of confidence given the confidence ...
*Friday, June 21, 2013 at 3:09pm by Sue 8*

**math**

Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . (b) Determine the level of confidence given the confidence ...
*Saturday, June 22, 2013 at 12:23am by JACKIE*

**math help**

Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . (b) Determine the level of confidence given the confidence ...
*Friday, June 21, 2013 at 6:56pm by Sue 8*

**math help**

Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . (b) Determine the level of confidence given the confidence ...
*Saturday, June 22, 2013 at 8:26am by Tommy8*

**College Physics**

The resistance will increase with temperature, since the coefficient of resistivity is positive. I assume you know how to compute the resistance at 40 and 60 C, knowing the value of 20 C and the coefficient. Just multiply the temperature change by the coefficient and add it to...
*Tuesday, February 10, 2009 at 2:25pm by drwls*

**Statistics**

correlation coefficient is not related to p value. You cannot draw conclusions using the correlation coefficient.. I changed my mind... The answer is True.. If it was o.30 or bigger it would be false..
*Friday, August 30, 2013 at 7:19am by Susie*

**Math**

If you wish, you can calculate the coefficient of correlation according to the method you use at school (mayer, median/median, etc.) using the first three pairs of data. In the given case, the coefficient of correlation should be 1.0 because the first three points are ...
*Friday, October 21, 2011 at 2:59pm by MathMate*

**college physics**

you find that it takes a horizontal force of 160 newtons to slide a box along the surface of a level floor at constant speed . the coefficient of static friction is 0.52, and the coefficient of kinetic friction is 0.47. if you place the box on a dolly of mass 5.3 kg and with ...
*Saturday, August 14, 2010 at 7:56am by oslec*

**Physics**

Suppose there is friction (static coefficient = 0.22, and kinetic coefficient = 0.15). With this friction, what force (if any) is necessary to hold the 30kg mass stationary on a 35 degree incline?
*Wednesday, February 12, 2014 at 3:39am by Dustin*

**Chem 1A**

So, after I did the half-reactions, I still only got a coefficient for NO_3- to be 1, yet in the answer key provided (this is a practice midterm question), it says the coefficient is 6....I'm confused as to how you are supposed to figure that out.
*Monday, November 12, 2012 at 5:41pm by Parkin*

**Physics**

(brass diameter)*(1+(brass coefficient)*(change in brass temperature)) = (iron diameter)*(1+(iron coefficient)*(change in iron temperature)) where: brass coefficient = 19*10^-6 K^-1 iron coefficient = 12*10^-6 K^-1
*Tuesday, November 16, 2010 at 10:54pm by Phil*

**Graphs&Intercepts**

Write a sentence comparing the graphs of equations with a positive coefficient of x and graphs with a negeative coefficient of x
*Thursday, October 13, 2011 at 5:08pm by Jamal*

**mathematics**

strangely worded question. the coefficient is the numerical value, or constant in front of a variable. e.g. for 3x^2y, the coefficient is 3 I will leave it up to you which one of your given poorly worded choices fits.
*Thursday, May 14, 2009 at 9:50pm by Reiny*

**physics**

Acquaint yourself with the coefficient of thermal expansion. For solids, the linear expansion coefficient is usually tabulated. For liquids, it is usually the volume expansion coefficient that you will find in tables. Subtract the volume expansion of the aluminum from that of ...
*Wednesday, January 4, 2012 at 10:28pm by drwls*

**Chemistry**

Using the set of smallest possible integer coefficients to balance the redox equation H2O2 +MnO−4 -> O2 +Mn+2 (acidic solution), the coefficient for H2O2 is 1. 5. 2. The correct coefficient is not given. 3. 2. 4. 7. 5. 4.
*Wednesday, October 20, 2010 at 1:47pm by Sarah*

**physics**

Calculate how thick an absorber needs to be to absorb 25% of the incoming light using the Lambert-Beer law for absorption. How is the small gain coefficient k of a laser defined in relation to the absorption coefficient ƒÑƒ¯
*Sunday, November 17, 2013 at 7:53pm by sawsan*

**Physical Science**

I should have saic we want to make the H atoms on the right 4 so what can we multily the molecule by (what is the coefficient) so that the coefficient x 2 (the 2 is from H2O) = 4 H atoms on the right?
*Tuesday, September 11, 2007 at 11:20pm by DrBob222*

**math**

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation
*Sunday, May 3, 2009 at 5:29pm by Stella*

**math**

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation
*Sunday, May 3, 2009 at 6:00pm by Stella*

**physics**

90 N = M * g * mu_s Solve for the static friction coefficient, mu_s M = 25 kg g = 9.8 m/s^2 The 51 N force can be used to compute the kinetic friction coefficient, but they didn't ask for that.
*Monday, March 14, 2011 at 11:02pm by drwls*

**Algebra 2**

Try x+t=14 2x+2y=28 2. If you multiply #1 by 4 the coefficient of y will be -12. Multiply #2 by 3 will give the coefficient of y as -12. \Subtracting then would eliminte y. Check my thinking.
*Friday, October 5, 2007 at 10:46am by DrBob222*

**Solving Quadratic Equations**

I don't know what the steps are. Perhaps the first step is to identify the a, b, and c that fit into the quadratic formula. a = 1, the coefficient of the squared term. b = 5, the coefficient of the x term. c = -6, the number.
*Tuesday, May 18, 2010 at 2:24pm by DrBob222*

**biostatistic**

Is this statement true or false: when calculating correlation coefficient between two continous variables, the scale on which the variables are measured affect the value of the correlation coefficient.
*Tuesday, December 11, 2012 at 5:31pm by nono*

**Math**

Use the Binomial Theorem to determine the coefficient of x^14 in the expansion of (3x^2 − 1/ 3)^ 16 . Express the coefficient as a fraction in its lowest terms. Please help me with this I'm getting nowhere. And please explain the logic behind! Thanks so much
*Sunday, May 30, 2010 at 3:30pm by Chamberlain*

**college physics**

A car travels around a circle with a diameter of 500 m at a constant speed of 25 m/s. The static friction coefficient is 0.3 and the kinetic friction coefficient is 0.2. Will the car skid?
*Monday, May 24, 2010 at 10:49am by Anonymous*

**algerba 2**

Since the leading coefficient is 1, just multiply the factors for all the roots: f(x) = (x-1)(x+3)(x-4) If the leading coefficient had not been 1, then you'd just have tacked that on the front as a multiplying factor.
*Sunday, October 16, 2011 at 10:11pm by Steve*

**math**

This is what I am trying to solve for - x2 – 2x – 13 = 0 - x2 - 2x = 13 step (a): move the constant term to right side of the equation 4x2- 8x = 52 step (b): multiply each term of the equation by 4 times the coefficient of x2 – in this case 1x4 = 4 (trying to solve this case ...
*Sunday, February 13, 2011 at 9:54pm by Dave*

**algebra 1**

Enter these data points into some graphing software, and ask the computer to perform a linear regression on the data (find the best-fit line that goes through the data points) The computer should also be able to calculate the correlation coefficient. If the correlation ...
*Wednesday, October 24, 2012 at 11:28am by Jennifer*

**Graphing**

So I'm a bit confused to what you have done >.<.. To find the symmetry for a trinomial it is 2ax + b = 0. So you'll have to use this equation and solve for x. If you haven't learned this equation yet, a is the coefficient of x^2 and b is the coefficient of x.
*Thursday, April 3, 2008 at 4:58pm by Anonymous*

**Statistics**

Using a statistics calculator, I found correlation coefficient r = 0.972; therefore, the coefficient of determination would be r^2 (note: ^2 means squared). Your rounded answer of 0.945 would then be correct.
*Monday, June 14, 2010 at 9:30pm by MathGuru*

**Chemistry**

Yes, more or less. You calculate u (ionic strength) first and use that to calculate activity coefficient. Using activity coefficient correct the Ka for butanoic acid, then plug and chug.
*Saturday, September 29, 2012 at 9:14pm by DrBob222*

**physics**

Diffusion rate (moles/area*sec) = (Concentration gradient)*(Diff. coefficient) Shouldn't the concentration difference have units of mole/m^3 ? Or are you providing the value of (Diff. coefficient)/(thickness) ?
*Saturday, March 27, 2010 at 5:15am by drwls*

**physics**

The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be?
*Wednesday, September 29, 2010 at 3:40pm by jerr *******

**Physical Science**

That's right. There are 3 O atoms on the left (from NH4NO3; i.e., 3 subscript x 1 coefficient = 3) and 3 on the right (1 from N2O; i.e., 1 subscript x 1 coefficient = 1 and 2 from 2H2O; i.e., 1 subscript x 2 coefficient = 2 and 1 from N2O + 2 from 2H2O = 3 O atoms on the right...
*Tuesday, September 11, 2007 at 11:20pm by DrBob222*

**physics (#1 of 3)**

1. (a) (weight)x (static friction coefficient) (b) (weight) x (kinetic friction coefficient) I will he glad to critique your work on the other two questions. You will usually get quicker responses here by posting one question at a time.
*Saturday, January 26, 2008 at 9:38pm by drwls*

**Mathematics**

Can you think of two numbers which when multiplied give you -8 (the last number) and when added will give you +2 (the coefficient of the middle term) ? How about 4 and -2, so .... (4)(-2 = -8 , 4 + (-2) = +2 x^2 + 2x - 8 = (x+4)(x-2) If the coefficient of the square term is 1...
*Tuesday, March 23, 2010 at 6:19pm by Reiny*

**Physics**

Forget the factor of three. They have given you beta (the volume thermal expansion coefficient), not alpha (the linear thermal expansion coefficient). Delta V = 5.81*10^-4*43*21.5 = 0.54 gallons
*Wednesday, April 27, 2011 at 1:47am by drwls*

**chemistry**

The redox reaction below occurs in acidic solution. Balance it with the smallest whole number coefficients and determine the coefficient for H2O. Zn(s) + NO3-(aq) ---> Zn2+(aq) + N2O(g) i got 4 as the coefficient for water, but the answer says that it is 5
*Saturday, November 1, 2008 at 9:27pm by Anonymous*

**Statistics**

In a simple linear regression you are told that the estimate of the slope coefficient was 0.9 and that the "t-statistic" for testing whether the slope parameter was unity or not was -3.6. What is the estimated standard error for the estimated slope coefficient?
*Tuesday, May 24, 2011 at 8:34am by Sisca*

**Statistics**

In a simple linear regression you are told that the estimate of the slope coefficient was 0.9 and that the "t-statistic" for testing whether the slope parameter was unity or not was -3.6. What is the estimated standard error for the estimated slope coefficient?
*Tuesday, May 24, 2011 at 6:04pm by sissy*

**statistics**

In a simple linear regression you are told that the estimate of the slope coefficient was 0.9 and that the "t-statistic" for testing whether the slope parameter was unity or not was -3.8. What is the estimated standard error for the estimated slope coefficient?
*Sunday, May 29, 2011 at 6:25am by Simone*

**physics**

The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be? ____ m/s2
*Wednesday, September 29, 2010 at 2:07pm by Anonymous*

**physics**

A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?
*Sunday, September 30, 2012 at 9:23pm by Rebecca*

**Physics**

A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?
*Monday, October 1, 2012 at 12:51pm by Katie*

**chem**

Madison--I made a typo, also. The power of O2 should be to the fifth and not squared. Each concentration is raised to the power of the coefficient in the equation. The coefficient for O2 is 5, therefore (O2)^5. Sorry bout that.
*Tuesday, December 4, 2007 at 6:23pm by DrBob222*

**physics**

You want the static friction coefficient in this case. It tells you the mount of friction that will start the sliding pricess. Call the coefficient Us. 40 = Weight*Us Us = 40N/200N = 0.20
*Thursday, March 10, 2011 at 5:15am by drwls*

**Algebra 2**

when expanding (x+y)^8, either an x or a y from each of the eight factors is used in the product. That means that x^3y^5 is going to occur several times and the number of times it occurs becomes the coefficient for x^3y^5. Based on this, what is the coefficient for x^3y^5?
*Monday, July 1, 2013 at 11:01pm by Anonymous*

**Physics**

Without knowing the diffusion coefficient, I have no idea. You might consider this a "random walk" problem. The product of mean free path and molecular velocity is approximately the diffusion coefficient, D. The average distance randomly walked is, as I recall, sqrt (pi*D*t)
*Wednesday, December 7, 2011 at 8:52pm by drwls*

**physics **

First, convert speed (V) to units of m/s. 42.4 km/h = 11.78 m/s Initial kinetic energy = Work done against friction (1/2)MV^2 = M*g*Uk*X M cancels out. X = V^2/(2*g*Uk) is the stopping distance, if the car is skidding. If the brakes manage to apply the maximum force that ...
*Saturday, April 2, 2011 at 10:54pm by drwls*

**Physics 204**

I have a few questions. 1.The coefficient of sliding friction between steel skate blades and ice is .05. How much force must be applied to a 150lb. skater to maintain a constant velocity? 2. If it takes a force of 6 pounds to cause a 24 pound box to slide on a level surface, ...
*Monday, January 21, 2008 at 12:42am by Charles*

**Math**

If the coefficient of the x^2 term is 1 and the middle term coefficient is even, I use completing the square rather than the formula x^2 - 6x + ... = -13 + .... x^2- 6x + 9 = -13+9 (x-3)^2 = -4 x-3 = ±√-4 x = 3 ± 2i
*Saturday, April 7, 2012 at 10:28pm by Reiny*

**physics**

In the figure below, m1 = 9.5 kg and m2 = 4.0 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30.
*Sunday, October 30, 2011 at 3:52pm by sandy*

**Math**

A. If the correlation coefficient is 0.65, what is the sign of the slope of the regression line? B. As the correlation coefficient decreases from -0.97 to -0.99, do the points of the scatter plot move toward the regression line, or away from it?
*Friday, October 21, 2011 at 2:59pm by Jen*

**statistics**

If the correlation coefficient is -0.54, what is the sign of the slope of the regression line? - As the correlation coefficient decreases from 0.86 to 0.81, do the points of the scatter plot move toward the regression line, or away from it
*Thursday, October 4, 2012 at 11:01am by mom*

**Physics**

A 19 kg wooden crate is dragged across the driveway. The coefficient of kinetic friction between the wood and concrete is 0.64. A. What is the horizontal force needed to drag the crate uniformly? B. Give a possible value for the coefficient of state friction.
*Tuesday, November 24, 2009 at 10:21am by Jessica*

**STATISTICS**

The coefficient of determination deals with variation and is a measure of how well any given regression line represents its data. If a regression line passes through every point, all of the variation could be explained. The further the regression line is away from the points, ...
*Sunday, April 17, 2011 at 6:12pm by MathGuru*

Pages: **1** | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>