Saturday

April 19, 2014

April 19, 2014

Number of results: 667

**micro economics**

Define and then derive the expression for the MRTS. How do you derive this? I thought derive meant to receive or take something. Thanks.
*Tuesday, June 23, 2009 at 11:58am by anonymous*

**physics, error calculation repost**

Hi Bob, I have to derive the error in the wavelength. I only know how to derive error equations from multiplication or addition/subtraction. For example, if I needed to derive an arror equation for N=MT it would be deltaN=(deltaM+deltaT)N So how do I do it for a division ...
*Tuesday, March 8, 2011 at 6:56pm by Trace*

**university physics**

Derive absolute error in equations: 1)Derive absolute error in (e/m) e/m= 2V/B^2*R^2 2)Derive absolute error in B B=8uN(Inet)/square root 125a
*Wednesday, November 21, 2012 at 2:45pm by Ella*

**chemistry**

To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use the HH equation, but I ...
*Tuesday, April 16, 2013 at 11:52am by Jamie*

**chemistry**

To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use the HH equation, but I ...
*Tuesday, April 16, 2013 at 11:52am by Jamie*

**chemistry**

To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use the HH equation, but I ...
*Tuesday, April 16, 2013 at 11:53am by Jamie*

**chemistry**

Derive the empirical formula of a hydrocarbon that on analysis gave the following percentage by mass composition: C = 85.63 % and H = 14.37 %. If the molecular mass of this compound is 56 g, derive the molecular formula.
*Thursday, May 30, 2013 at 2:07am by Hanin*

**trigonometry**

Derive the identity cot A+1= csc A to derive this identity does it mean to change the cot^2 A + 1 into csc^2 A ??
*Sunday, January 30, 2011 at 3:09pm by Anonymous*

**Micro econ**

1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first i derive the equation to 2/3X^-1/3 1/3Y^-2/3 then im stuck i need help with the simplification
*Tuesday, September 18, 2007 at 11:39pm by Brett*

**math**

Change OF 75 cents or change from a dollar (25 cents)? In either case, I suggest you make a list instead of trying to derive a formula, or plugging into one we derive for you. When you start making the list, perhaps a formula to use will become obvious.
*Monday, January 25, 2010 at 1:02pm by drwls*

**physics**

Pretty silly question. The official mass of a major league baseball is 0.145 kg. No pitcher has ever thrown a baseball 200 km/h. Not even Sandy Koufax. You can derive a baseballmass from the numbers you were given by equating the kinetic energy of the baseball to the work done...
*Friday, November 27, 2009 at 10:33pm by drwls*

**poem**

No ... and there's no such word as "in-bedded" either. http://www.answers.com/topic/derive
*Tuesday, October 30, 2012 at 10:18pm by Writeacher*

**Physics, error derivation**

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...
*Tuesday, March 8, 2011 at 12:24am by trace*

**physics, error calculation repost**

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...
*Tuesday, March 8, 2011 at 6:56pm by Trace*

**economics**

Google is a wonderful place to start! http://www.google.com/search?q=how+to+derive+marginal+utility+of+income&oq=how+to+derive+marginal+utility+of+income&aqs=chrome..69i57j0.3163j0j7&sourceid=chrome&espv=210&es_sm=119&ie=UTF-8
*Wednesday, April 2, 2014 at 8:05am by Writeacher*

**physics**

A ball is thrown vertically upwards, from ground level, with an initial speed vo. Assume that air resistance is negligible so that the acceleration of the ball is due solely to gravity. a) Derive an algebraic formula for the time t that it takes for the ball to reach its ...
*Wednesday, September 1, 2010 at 3:52pm by Ashleyy*

**Economics**

Ive been stuck on this forever now if someone could please walk me through it i was appreciate it: 1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first...
*Tuesday, September 18, 2007 at 7:58pm by Brett*

**chemistry**

The kinetic theory of gases is based on a number postulates from which the equation P= 1/3 N/Vm is derived (P is the pressure of the gas, N the number of molecules in the container, m the mass of each molecule and is the mean square speed). State all the postulates and...
*Wednesday, January 1, 2014 at 9:20pm by Taylor*

**Chemistry**

The determination of 4.000 mmol of ZnCl2 is performed gravimetrically by the addition of NaCN solution in a Total volume of 200.00ml. Ksp = 3.0X10^-16 for Zn(CN)2. State and verify all assumption. Assume cyanide does not hydrolyze. a. Derive the COC and COM equations for the ...
*Saturday, December 22, 2012 at 5:01pm by WILL*

**AP Physics**

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is assumed to derive a ...
*Thursday, June 18, 2009 at 6:44pm by AP Physics*

**economics**

Suppose that the following equations describe an economy (C, I, G, T, and Y are measured in billions of dollars and r is measured in percent; for example, r = 10 C=170+0.6(Y-T),T=200,I=100-4r,G=350 (M/P)d=L=0.75Y-6r, (M/P)s=735 a. Derive the equation for the IS curve (Hint: ...
*Monday, August 16, 2010 at 11:07pm by yaw*

**Physical Science**

The study of heat and its relation to fluid properties, and the performance of work upon and by fluids, is called thermodynamics. The subject can be taught using two or three laws of thermodynamics, without dealing with kinetic theory. The kinetic theory of matter can be used ...
*Tuesday, April 27, 2010 at 1:30pm by drwls*

**Physics PLEASE**

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is assumed to derive a ...
*Friday, June 19, 2009 at 10:39am by Physics PLEASE*

**Calculus**

Posted by Aletha on Sunday, March 18, 2007 at 6:51pm. After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours...
*Sunday, March 18, 2007 at 7:54pm by Aletha*

**PHYSiCS -- **

Where did you derive 0.2387 ?
*Sunday, November 21, 2010 at 8:01pm by Reema*

**English**

Derive(its a verb)
*Wednesday, December 15, 2010 at 9:36pm by alley*

**Physics**

how do you derive deltaG
*Tuesday, May 28, 2013 at 8:51am by Anonymous*

**help plz**

There is a difference between cognate languages and cognate words. When cognate words (that are spelled the same or similarly) mean the same thing in different languages, it can be because they derive from a common parent language (e.g. Latin or old German) OR because one ...
*Saturday, January 30, 2010 at 1:15am by drwls*

**college chem**

Thank you but I am not sure what you mean by derive it
*Friday, February 1, 2013 at 12:09am by k*

**Physics**

can you explain how you derive that equation?
*Saturday, March 9, 2013 at 9:32pm by Eduardo*

**Calculus**

Derive: F(x)= sqrt(3, 1 + tan(x))
*Wednesday, May 1, 2013 at 10:47am by Mason*

**Calculus**

After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours? c) derive a formula for the car's acceleration. I'm ...
*Sunday, March 18, 2007 at 8:40pm by Aletha*

**Physics question - Damon please help!!**

I am doing the monkey and hunter question, and I need to find out what the minimum speed the bullet has to be.. The variables I have are g, Vo, theta, Dx(horizontal distance from monkey), and Dy (vertical distance from monkey). I need to derive Vo in the form of (Dx/cos0)(sqrt...
*Monday, November 11, 2013 at 12:44am by Jennifer*

**economics**

(2 points) Suppose that the following equations describe an economy (C, I, G, T, and Y are measured in billions of dollars and r is measured in percent; for example, r = 10 means r = 10%) 1700.6 200 1004 350...
*Monday, August 16, 2010 at 10:59pm by kojo*

**Trigonometry**

Derive the identity cot A+1= csc A
*Sunday, January 30, 2011 at 2:44am by Anonymous*

**p**

Derive Gauss law in integral form.
*Sunday, February 10, 2013 at 1:10am by mania*

**immunology**

do monocytes derive from killer T cells?
*Monday, May 6, 2013 at 10:29pm by Jess*

**economics**

how to derive marginal utility of income?
*Wednesday, April 2, 2014 at 8:05am by geet*

**Economics Help pls**

Suppose you are given the following production function: , where y is output and K is capital. y= 60K + 20.3K2- K3 1.1 what is a production function, what is the real work application of such, and where would you source the data to develop a production of the type given above...
*Friday, July 16, 2010 at 3:16pm by Sarah*

**physics**

a) There is a velocity addition formula: (v1 + v2)/[1+v1 v2/c^2] that you can use. However, the point of learning relativity is understanding how to derive such formulas from first principles, not to learn a list of formulas. So, I suggest you study the Lorentz transformations...
*Sunday, May 24, 2009 at 6:24am by Count Iblis*

**Is this how you derive the formula for arc length?**

Yes; that is one way.
*Tuesday, December 4, 2007 at 2:44am by drwls*

**Calculus**

Can someone please tell me how to derive V=4/3pi(r)^3 to get x^2+y^2=r^2?
*Sunday, March 23, 2008 at 1:31am by Jess*

**Science, Chemistry**

I would like to know how to derive it, please?
*Wednesday, December 3, 2008 at 2:33am by Tricia*

**macroeconomics**

Households derive income from ______.
*Sunday, July 19, 2009 at 4:17am by steven Sanchez*

**English**

What are the ways of how to derive words into noun?
*Wednesday, November 9, 2011 at 6:30am by laniie*

**physics**

You need to derive or find the "rocket" formula for the velocity of an object that has a fixed force T applied while its mass is decreasing. Calculus is needed to derive it. You can find it at http://www.ebtx.com/mars/rocketeq.htm You will need the rocket exhaust velocity, Ve...
*Tuesday, October 7, 2008 at 10:40pm by drwls*

**science**

derive all equation of motion mathametically & graphically.
*Wednesday, June 25, 2008 at 11:59am by sangam*

**a bit challenging for me**

where did u derive ur w w2 eqn frm?
*Sunday, February 10, 2008 at 3:39pm by Physics_freak*

**British Lit**

What are the 3 languages that derive from the original Celtic language?
*Thursday, October 4, 2012 at 5:39pm by Monica*

**Calculus HELP!**

Use the fact that L{f'}=sF-f(0) to derive the formula for L{cosh at}
*Saturday, July 27, 2013 at 9:33pm by Sara*

**economic**

Define and then derive the expression for the marginal rate of technical substitution
*Monday, April 6, 2009 at 11:16pm by Anonymous*

**Maths**

hoe can i derive this equation. s(v)=(4pi)^1/3(3v)^2/3 and please explain.
*Monday, September 20, 2010 at 9:30am by Joe*

**physics**

derive the formula v0=sqrt((deltaX)squared)*g)/2*deltaY
*Thursday, October 11, 2012 at 8:02pm by carlton *

**Derive**

Thank you SO much sir. I feel a lot better knowing that I did this right
*Thursday, March 7, 2013 at 11:38am by Mary*

**college math**

Drwls, how did you derive the first step so that I can continue with the remainder of the steps?
*Sunday, February 15, 2009 at 6:17pm by Ann*

**physics**

Please show me how to derive the relativist mass formula: m = m0 / sqrt(1 - v^2/c^2)?
*Thursday, October 22, 2009 at 4:08pm by Marinho*

**English**

7. If the subject is plural, the verb will be "derive." The rest are all possible. Sra
*Sunday, February 20, 2011 at 12:28pm by SraJMcGin*

**Physics**

How would you derive the formula {-Ff+Fgx=ma} to show that s=tan
*Tuesday, March 19, 2013 at 8:30pm by po*

**University, Physics**

Derive the error in equation: T1/2 = 1n(2)/lambda solve for T
*Monday, March 25, 2013 at 2:10pm by Kenna*

**heat transfer**

Derive 3D general conduction equation for homogeneous material
*Wednesday, July 24, 2013 at 8:54am by jigs*

**Property of logarithms**

Using property of logarithms, how do I prove derivative of ln(kx) is 1/x First observe that ln(kx) = ln(k) + ln(x) then take derivatives. The ln(k) is simply a constant so it goes away. You could also derive it as d/dx ln(kx) = 1/kx * k by the chain rule. To see that the ...
*Friday, October 20, 2006 at 9:51pm by Jen*

**math**

How do I derive the secant reduction formula? Am I asking this question wrong? Integrate: (sec x)^n dx
*Thursday, November 8, 2007 at 4:08pm by mathstudent*

**AP Calculus**

find f'(2) given g(2)=3, h(2)=-1, h'(2)=4, and g'(2)=-2 f(x)=g(x)h(x) I'm just not understanding how to start this at all and what it wants me to derive when I don't know the function
*Monday, October 5, 2009 at 12:47am by Bri*

**calculus high school**

isn't that the power rule? anyway, ow do you derive teh second term?
*Thursday, April 8, 2010 at 7:11pm by k*

**physcis**

use the principle of an incline plane and derive the coeffecient of stationary friction
*Tuesday, June 28, 2011 at 6:43pm by merry light*

**college chem**

The slope will be nRT. You will have to use the ideal gas law to derive this.
*Friday, February 1, 2013 at 12:09am by Devron*

**heat transfer**

what is utility of extended surface? derive governing differential equation for fins
*Wednesday, July 24, 2013 at 8:32am by jigs*

**Econometrics**

Consider the linear model yi = xiB + e = B1 + B2xi2 + ... + Bkxik + ei, i = 1, ..., n, or in matrix notation Y =XB + e. Consider the linear model X = Z pie + u where Z is a matrix n * m, X is a matrix n * k and pie is a matrix m * k. Assume that 1. E (x'ixi) has full column ...
*Saturday, August 31, 2013 at 4:24pm by Joy*

**Is this how you derive the formula for arc length?**

in the third step, how did you integrate the right side with no delta-variable?
*Tuesday, December 4, 2007 at 2:44am by Matt*

**science**

Derive the expression for the difference in the free energy between a metal in its normal and superconductivity states
*Thursday, July 31, 2008 at 12:34pm by vijaya*

**physics**

derive expression to show that how drag force is dependent on velocity of moving object in fluid
*Friday, February 17, 2012 at 8:14am by momi*

**chemistry**

You don't need to derive the HH equation, only derive the pH range needed. pH = pKa + log(base)/(acid) The problem tells you that acid and conjugate base should not differ by more than a factor of 10. Therefore, use acid = 10*base as the lower end and 10*acid = base as the top...
*Tuesday, April 16, 2013 at 11:53am by DrBob222*

**Chemistry**

P*molar mass = density*RT The equation comes from PV = nRT. I can show you how to derive it if you are interested.
*Tuesday, July 6, 2010 at 7:58pm by DrBob222*

**Math**

so for (a) you used Y = Yo + Vot+ 1/2at^2 so when you derive it, you get time for the other ones, got it. THanks a lot Reiny
*Monday, August 6, 2012 at 9:14pm by Robert*

**12th grade**

The Inuit of Nunavik would be one example, if they derive all of their food and clothing by hunting and fishing.
*Saturday, September 4, 2010 at 11:01am by drwls*

**math**

derive the equation of the parabolla with its vertex on the line 7x+3y-4=0 and containing ponts (3,-5) and (3/2,1) the axis being horizontal.
*Tuesday, May 1, 2012 at 10:16am by intan*

**macroeconomics**

You will get ideas here: http://www.google.com/search?q=Households+derive+income+from+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
*Sunday, July 19, 2009 at 4:17am by SraJMcGin*

**Calculus**

You can derive the formula for the volume of a sphere by rotating the circle x^2 + y^2 = r^2 about the x axis by taking the integral of pi(r^2 - x^2)dx from -r to +r Is this what you meant?
*Sunday, March 23, 2008 at 1:31am by Reiny*

**math**

Well, theoretically speaking all other methods of solving this equation to derive r positive would come from this formula
*Wednesday, August 6, 2008 at 2:23pm by Jacob Sudes *

**chem 101**

using the unit conversion method derive an equation to calculate heat produced from the HCl-Na OH reaction
*Tuesday, October 26, 2010 at 7:48pm by andrew*

**math**

Take the simplest approach first. O + O must be 2 or 4, or 2O = T, without any carryover, c/o, from N + N. Therefore: O....E....T....N....W 2....1....4....3....6 4....2....8....3....6 Now consider carryovers from E + E and/or N + N and see what you can derive.
*Thursday, February 10, 2011 at 12:48am by tchrwill*

**Chem 101**

Using the "Unit conversion method", derive an equation to calculate the heat required to raise the calorimeter to the maximum temperature.
*Wednesday, October 26, 2011 at 9:57pm by John*

**Calculus. I need help!**

im guessing you meant sin(x)^5. in which case yeah you did it wrong. you derive (x)^k , k being a constant, like this k*(x)^(k-1)*x' so f'(x)=5sin(x)^4*cos(x)
*Tuesday, February 28, 2012 at 2:00am by Bryant*

**trig**

Derive the identity 1 + cot ^2 theta = csc^2 theta by dividing x^2 + y^2 = r^2 by y^2
*Thursday, September 1, 2011 at 10:27pm by Anonymous*

**CALC**

I am sorry i still dont know how to start. and i am sorry for the problem earlier..it wasnt my fault :( Note that the way students like you are asked to solve this and similar problems is usually not the way people like me solve such problems. It is a good exercise to plug in ...
*Sunday, May 6, 2007 at 9:19pm by URGENT PLZ*

**MATH !!**

Given that f:x -->3-x g:x --> x+2/x-5 derive the expression for gf(x)
*Wednesday, September 7, 2011 at 9:02pm by Nelly*

**MATH**

Given that f:x -->3-x g:x --> x+2/x-5 derive the expression for gf(x)
*Wednesday, September 7, 2011 at 8:49pm by Nelly*

**algebra**

Q-80= -10P Q-10P = 0 Derive the slop of both?
*Saturday, October 5, 2013 at 10:10am by dino*

**physics**

You can derive this by setting centripetal force=magnetic force mv^2/r=qBv
*Wednesday, April 9, 2008 at 4:34pm by bobpursley*

**economics**

Could you please clarify how did you derive the answer for (a) supply schedule = 500+ 50P? Thanks, SB
*Wednesday, November 14, 2007 at 1:53am by SB*

**algebra 116**

It is an equation with two variables. What are you supposed to do with it? Graph it? Derive an equation for x? Is the x in the denominator?
*Saturday, December 5, 2009 at 2:05am by drwls*

**trigonometry**

Can you please show me the steps: Derive the identity for sin 3x in terms of sin x.
*Thursday, February 24, 2011 at 2:14am by anon*

**chemistry**

What is the oxidation number of carbon, and how do you derive this number?
*Thursday, August 28, 2008 at 9:14pm by hunter*

**Calculus**

If you are trying to derive the equation for y, y(2 + 9x) = 4 y = 4/(2 + 9x)
*Wednesday, January 7, 2009 at 1:06am by drwls*

**maths-ecllipse**

Derive the equation of the ecllipse with center (h,k)
*Tuesday, March 5, 2013 at 2:17pm by anoynomous*

**Economics**

There are 10 identical consumers whose demand is D: p = 20 - 10q. There are 10 identical firms, each firm's marginal cost is MC(q)= 5 + 5q. The market is competitive. a) derive the market demand function b) derive the market supply function c) what is the market equilibrium ...
*Monday, February 4, 2013 at 11:24am by Andrea*

**biology**

Most are phototrophs, but many are heterotrophs, meaning they derive energy from both sunlight (during the day) and consuming other organic matter (at night).
*Tuesday, April 8, 2008 at 11:35pm by drwls*

**physics**

Slippage happens when the tangent of the slope angle exceeds the static coefficient of friction. Use (or derive) that fact to figure out the answer
*Saturday, December 13, 2008 at 2:39pm by drwls*

**math**

bosnian, i already used wolfram alpha to get the solutions I listed. I want to derive the solution analytically. anon, I believe you just did algebraic rearrangement.
*Thursday, June 16, 2011 at 2:50pm by Sean*

**Square Root Help!!! Urgent:)**

Thanks SO much!! :) Helped a lot, from the answers, I could understand how to derive them! Thanks again! -Angellove:)
*Monday, November 3, 2008 at 7:11pm by Angellove*

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