Search: coefficient

Number of results: 4,553

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 ...
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. ...
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 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

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

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

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

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 ...
Thursday, April 8, 2010 at 2:00pm by DrBob222

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 ...
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 (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
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

Math
Exactly! For example, -3x² is a term, -3 is the coefficient x is the variable,and &sup2 is the exponent. The sign is part of the coefficient.
Tuesday, May 10, 2011 at 8:12am by MathMate

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

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

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

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

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

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

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

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

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

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

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

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

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

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 ...
Sunday, May 30, 2010 at 3:30pm by Chamberlain

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

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

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 ...
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

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

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

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 ...
Thursday, April 3, 2008 at 4:58pm by Anonymous

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 ...
Tuesday, September 11, 2007 at 11:20pm by DrBob222

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

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 (#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

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 -3.8. What is the estimated standard error for the estimated slope coefficient?
Sunday, May 29, 2011 at 6:25am by Simone

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

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

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
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
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

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
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...
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

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

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

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

Business Statistics
Given the least squares regression line = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: A) -0.88 B) +0.88 C) +0.90 D) –0.90 I picked C +0.90
Sunday, March 15, 2009 at 7:50pm by Stuart

Physics
In a popular amusement park ride, a rotating cylinder of radius 3.0 m is set in rotation at an angular speed of 0.80 revolutions per second. The floor then drops away, leaving the riders suspended against the wall in a vertical position. (a) What minimum coefficient of ...
Thursday, October 20, 2011 at 11:35pm by harrison

PHYSICS PLEASE HELP !!!!!
A mass of 30 kg lies on a horizontal surface with a coefficient of static friction of 0.72 and a coefficient of kinetic friction of 0.31. If a force of 25.1 Newtons is applied parallel to the surface (+x direction if you prefer), what is the magnitude of the acceleration of ...
Tuesday, October 25, 2011 at 10:16pm by Amanda

PHYSICS HELP PLEASE !!!!!
A mass of 17 kg lies on a horizontal surface with a coefficient of static friction of 0.54 and a coefficient of kinetic friction of 0.22. If a force, F, is applied parallel to the surface (+x direction if you prefer), what is the magnitude that F needs to be to begin to move ...
Tuesday, October 25, 2011 at 10:08pm by Amanda

algebra 1
I gave you the answer yesterday. I picked 2.56 because 4x^2 + 6.4x + 2.56 = (2x + 1.6)^2 is a "perfect square", as you can verify by multiplication. 1.6 is the number which, when multiplied by twice the square root of 4 (the first coefficient) gives the second ...
Wednesday, March 4, 2009 at 2:26am by drwls

Physics
A car is traveling at 42.0 km/h on a flat highway. (a) If the coefficient of friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop? m (b) What is the stopping distance when the surface is dry and the coefficient of ...
Sunday, October 7, 2012 at 11:30pm by Kali

Finance
Security A has an expected return of 7%, a standard deviation of returns of 35%, a correlation coefficient with the market of -0.3, and a beta coefficient of -1.5. Security B has and expected return of 12%, a standard deviation of returns of 10%, a correlation with the market ...
Monday, July 4, 2011 at 2:11am by Jamal

Discrete math
I need to find the coefficient of x^18 y^32 in (x+y)^50. I understand that we have to use the binomial theorem. I know how to find the coefficient for example x^18 but here we have "x" as well as "y" which I have no idea about.
Wednesday, October 3, 2012 at 8:49pm by Genie_math

STATISTICS
A) If a regression experiment has correlation coefficient r= 0.75, what precent of total variation is explained by the regression? B) if 85% of total variation is explained by the regression, and there is an inverse relationship between y and x, then what is the correlation ...
Sunday, April 17, 2011 at 6:12pm by SROBSON

PHYSICS URGENT! PLEASE FRICTION CASE 2
A 13 kg box is at rest on a level floor. The coefficient of static friction µS = 0.9 and the coefficient of kinetic friction µK = 0.8. Audrey is applying a 140 N push at an angle (=20°) as shown in Figure 1. C) What is the magnitude of FNormal on box from Earth?
Tuesday, December 4, 2012 at 7:14pm by Sophia

PHYSICS
NEED HELP ON THE ANSWER OF THIS PROBLEM THE EFFICIENCY OF THE PULLEY DECREASES WITH A COEFFICIENT OF FRICTION OF 2.0 THE EFFICIENCY OF THE PULLEY IS 60% WHAT WOULD YOU EXPECT THE EFFICIENCY TO BE IF THE COEFFICIENT OF FRICTION INCREASED TO 0.3
Monday, November 1, 2010 at 12:03am by AMBER

Physics
Please help me with these three questions,they deal with coefficient of friction 1) A car rounds a turn of radius 25m at a speed of 20m/s. Find the coefficient of friction neccessary to keep the car on the road 2) A man is attempting to slide a piece of furniture weighing 750N...
Wednesday, January 27, 2010 at 7:37pm by Bryian

Physics
Please help me with these three questions. They deal with coefficient of friction 1) A car rounds a turn of radius 25m at a speed of 20m/s. Find the coefficient of friction neccessary to keep the car on the road 2) A man is attempting to slide a piece of furniture weighing ...
Wednesday, January 27, 2010 at 5:22pm by Bryian

Physics (Mechanics)
A 10-kg crate on a ramp is inclined at 30 degrees from the horizontal and released. The coefficients of friction between them are .48 (coefficient of static friction) and .28 (coefficient of kinetic friction). a) Does the block slide? b) What then is the actual friction force...
Sunday, September 30, 2012 at 5:36pm by Anonymous

Mth plz...help
You've got a positive relationship (perhaps not surprisingly) between attendance and success, which you can see from the sign of the coefficient on the X term (+0.5). That means the correlation coefficient (which can only lie between -1 and +1) is positive. Only one of the...
Sunday, September 21, 2008 at 11:12am by David Q

Algebra
2x3 + 2x2 + 10 By the way, important to write that as 2x^3 +2x^2 + 0x + 10 If you leave the zero coefficient terms of the polynomial out, you get messed up worse with columns and such. That is exactly why they had no coefficient of x, to make you figure that out.
Saturday, January 12, 2008 at 8:12pm by Damon

Physics
A 13.0 -kg box is released on a 33 degree incline and accelerates down the incline at 0.20 m/s^2 What is the coefficient of kinetic friction? * If I know the friction force impeding the object motion is 67 N. How do I find the coefficient of kinetic friction?
Sunday, June 17, 2012 at 11:16am by Mike Joseph

physics. please help!
A 2.5 kg block is pulled to the right by a horizontal string. The coefficient of static friction between the block and the floor is 0.30 and the coefficient of kinetic friction is 0.20. What value of force applied by the string will start the block moving?
Sunday, October 31, 2010 at 7:44pm by caroline

physics
If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of kinetic friction? What is the coefficient of static friction between the box and the floor? If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of...
Thursday, September 30, 2010 at 3:26pm by Sam

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