Wednesday

July 27, 2016
Number of results: 502

**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.
*June 23, 2009 by anonymous*

**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
*November 21, 2012 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 ...
*April 16, 2013 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 ...
*April 16, 2013 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 ...
*April 16, 2013 by Jamie*

**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
*September 18, 2007 by Brett*

**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.
*May 30, 2013 by Hanin*

**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 ...
*June 18, 2009 by AP Physics*

**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 ??
*January 30, 2011 by Anonymous*

**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 ...
*March 8, 2011 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 ...
*March 8, 2011 by Trace*

**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 ...
*June 19, 2009 by Physics PLEASE*

**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...
*September 18, 2007 by Brett*

**High school**

. A cement manufacturer has a cost of production of $28 for each bag of cement produced and the sells a bag of cement for $40. The monthly fixed cost of the manufacturer is $180,000. a. Derive the monthly cost function of the manufacturer? b. Derive the monthly revenue ...
*February 3, 2016 by Anonymous*

**Maths**

y = 2[cos1/2(f1 - f2)x][cos1/2(f1 + f2)x] let f1 = 16 let f2 = 12 therefore y = 2[cos1/2(16 - 12)x][cos1/2(16 + 12)x] y = 2cos(2x)cos(14x) derive y = 2cos(2x)cos(14x) y' = 2[-2sin(2x)][-14sin(14x)] is all of this correct? Additionally, I am unsure how you would derive the ...
*February 27, 2016 by Lola*

**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 ...
*September 1, 2010 by Ashleyy*

**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 ...
*December 22, 2012 by WILL*

**College Physics**

Two pucks traveling at each other collide and deflect at 30.0 angles from their original velocities. The mass of Puck B is 20% greater than the mass of Puck A. Before colliding, the pucks approach each other with momenta of equal magnitudes and opposite directions. After ...
*January 24, 2015 by Bill Smithers*

**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...
*January 1, 2014 by Taylor*

**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 ...
*October 20, 2006 by Jen*

**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...
*November 11, 2013 by Jennifer*

**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: ...
*August 16, 2010 by yaw*

**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...
*August 16, 2010 by kojo*

**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...
*March 18, 2007 by Aletha*

**Physics**

how do you derive deltaG
*May 28, 2013 by Anonymous*

**Maths**

How do you derive: 2cos(3-2x)?
*February 24, 2016 by Hannah*

**MATH !!**

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

**MATH**

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

**Calculus**

Derive: F(x)= sqrt(3, 1 + tan(x))
*May 1, 2013 by Mason*

**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...
*July 16, 2010 by Sarah*

**macroeconomics**

Households derive income from ______.
*July 19, 2009 by steven Sanchez*

**Trigonometry**

Derive the identity cot A+1= csc A
*January 30, 2011 by Anonymous*

**p**

Derive Gauss law in integral form.
*February 10, 2013 by mania*

**immunology**

do monocytes derive from killer T cells?
*May 6, 2013 by Jess*

**economics**

how to derive marginal utility of income?
*April 2, 2014 by geet*

**Trig**

How do you derive this identity? Cos(t)=1-sin^2(t/2)
*March 11, 2015 by Jean*

**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 ...
*March 18, 2007 by Aletha*

**Calculus**

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

**English**

What are the ways of how to derive words into noun?
*November 9, 2011 by laniie*

**Calculus HELP!**

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

**calculus**

f(x,y)=2xe^y-3ye^-x derive second order
*October 10, 2014 by julius*

**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 ...
*August 31, 2013 by Joy*

**science**

derive all equation of motion mathametically & graphically.
*June 25, 2008 by sangam*

**physics**

How do we derive these laws: (most of the time, the numbers are subscript) v'2 = v1 * ( (2 * m) / (m1 + m2) ) + v2 * ( (m2-m1) / (m1+m2) ) & v'1 = v1 * ( (m1-m2) / (m1+m2) ) + v2 * ( (2 * m2) / (m1 + m2) )
*April 6, 2008 by Anonymous*

**Maths**

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

**Physics & Calc**

Derive the stationary target equations: v1 = [(m1-m2)/(m1+m2)]v1 v2 = [(2m1)/(m1 + m2)] v1
*November 11, 2010 by Megan*

**British Lit**

What are the 3 languages that derive from the original Celtic language?
*October 4, 2012 by Monica*

**physics**

derive the formula v0=sqrt((deltaX)squared)*g)/2*deltaY
*October 11, 2012 by carlton *

**Physics**

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

**University, Physics**

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

**Algebra Help Please**

I need to be shown the steps on how you derive at this answer (5a^7 / 2b^5c)^0 = 1
*January 11, 2015 by slomo*

**phy 105 **

Derive the equation T = 2pi(l/g)^1/2. That's period of motion.
*December 9, 2015 by Zebulon *

**economic**

Define and then derive the expression for the marginal rate of technical substitution
*April 6, 2009 by Anonymous*

**physics**

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

**heat transfer**

Derive 3D general conduction equation for homogeneous material
*July 24, 2013 by jigs*

**trigo**

Can i have a solution on how i can derive on this answer 4cos^3x - 3 cos x.....please..
*September 28, 2014 by rai zan*

**physics**

why we derive our hands upwards and backwards to catch the ball?
*February 23, 2015 by Haya Khan*

**physic**

if the gravitational force f is given by F=GM1M2/r^2, derive the dimension if the constant G.
*January 9, 2016 by yaro*

**math**

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

**Derivation of Physics Equation**

How do we derive these laws: (most of the time, the numbers are subscript) v'2 = v1 * ( (2 * m) / (m1 + m2) ) + v2 * ( (m2-m1) / (m1+m2) ) & v'1 = v1 * ( (m1-m2) / (m1+m2) ) + v2 * ( (2 * m2) / (m1 + m2) )
*April 5, 2008 by Anonymous*

**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
*October 5, 2009 by Bri*

**physcis**

use the principle of an incline plane and derive the coeffecient of stationary friction
*June 28, 2011 by merry light*

**heat transfer**

what is utility of extended surface? derive governing differential equation for fins
*July 24, 2013 by jigs*

**physics**

how can we derive the work-energy theorem form Newton's second law of motion?
*March 16, 2015 by sarah*

**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 ...
*February 4, 2013 by Andrea*

**science**

Derive the expression for the difference in the free energy between a metal in its normal and superconductivity states
*July 31, 2008 by vijaya*

**physics**

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

**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.
*May 1, 2012 by intan*

**science**

derive second equation of motion.S=ut+1/2at2 graphycally where the symbols have their usual meanings.
*August 31, 2014 by rajashri*

**Civics**

According to the declaration of independence, from where do governments derive the right to govern? Themselves The creator*** Their family The governed
*January 19, 2015 by jeje*

**Maths (Coordinate Geometry)**

A point P(x,y) moves so that the line joining P to A(9,-5) is perpendicular to B(4,5). Derive an equation specifying the locus of P.
*May 8, 2016 by Gemma*

**Economics**

Call Us demand function is Q=410-P and MC=10+5Q. Given that TFC=$0 a)derive an equation for TC b)calculate the profit maximizing level
*November 14, 2009 by Special*

**chem 101**

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

**maths**

three resistors are connected the resistances are R2 = 2 R3= 3 R1=r r is not specified Question: Derive the total resistance of the system as an expression containing r
*March 29, 2015 by dev*

**Managerial Economics**

I have an exam in two days. I need an explanation to this question please. MC = 10+5Q derive an equation for total cost
*December 8, 2009 by Special*

**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. My ...
*March 18, 2007 by Aletha*

**Chem 101**

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

**Chemistry**

By using the Clausius-Clapeyron equation,lnP=Hvap/RT +C , derive the relationship between the vapor pressures,P1 and P2, and the absolute temperatures at which they were measured,T1 and T2 .
*January 25, 2012 by Jeremy*

**Material Sciences**

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive an expression for the equilibrium spacing, r0, as a function of A, B, m, and n.
*September 27, 2014 by qwerty*

**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 ...
*May 6, 2007 by URGENT PLZ*

**math**

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
*October 4, 2015 by ana*

**trigonometry**

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

**SCIENCE**

how do we derive the formula at=vf-vi if we will find acceleration? please have it step by step. Thank you
*January 15, 2013 by RANDY*

**geometry**

Derive the distance formula (d) shown below for points A = (x1, y1, z1) and D = (x2, y2, z2). 2 2 1 2 2 1 2 d = (x2 − x1) + (y − y ) + (z
*April 1, 2013 by denise*

**physics dimension **

if the gravitational force F is given by F=GM1M2/r^2 derive the dimension of the constant G.
*January 9, 2016 by yaro*

**trig**

Derive the identity 1 + cot ^2 theta = csc^2 theta by dividing x^2 + y^2 = r^2 by y^2
*September 1, 2011 by Anonymous*

**statistics**

Derive one Tail and Two Tail numbers for c = 0.88 or alpha = 0.12.
*January 22, 2015 by lorin*

**Math**

How would you derive n(E)= E^2/((e^E/T) - 1) a) Evaluate dn/dE at fixed T. Leave answer in symbolic forms of E and T. b) dn/dT at fixed E.
*October 21, 2012 by Avery*

**statistics(please answer!)**

Derive one Tail and Two Tail numbers for c = 0.88 or alpha = 0.12.
*January 20, 2015 by lovely*

**Calculus Chain rule**

How can derive this function?f(x) = 2/(9x^5+1)^5 The answer is The answer is -450x^4/(9x^5+1)^6 Can you please show why? Thank you
*February 17, 2015 by Tom*

**Physics (Please Help)**

Problem 4.4- Suppose n o and n e are given. In (a) you only need to find the magnitude of the group velocity. Problem #2 in HW 10 may be helpful. You can also directly use the definition of group velocity, i.e., v g = triangle k w (k), taking into account the equation of the ...
*November 13, 2013 by Joy*

**Chemistry**

I believe the question asked to me in class was something like how do you derive the van't hoff factor to find that ln(K2/K1) = -(delta)H/R[(1/T2)-(1/T1)] nevermind i found the solution. thanks anyways
*December 12, 2006 by JYD*

**science**

derive the expression for time of flight maximum height & range when a body is projected at an angle thita frommthe vertical position with a proper diagram.
*June 28, 2012 by tanushree*

**Material Sciences**

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
*September 27, 2014 by qwerty*

**Material Behavior**

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
*September 29, 2014 by Ivan*

**physics**

the surface tension Y, of liquid depends on the density,P, acceleration of gravity,g, and the height, h. use the method of dimension to derive the actual relationship between these quantities
*March 7, 2016 by charles*

**Physics (please help!!!!)**

Derive the rocket equation M(dV/dt) = -u(dM/dt)for a rocket in the (constant) gravitational field near the surface of the Earth.
*March 7, 2011 by Eduardo*

**Partial Differential Equations**

Problem 4.4- Suppose n o and n e are given. In (a) you only need to find the magnitude of the group velocity. Problem #2 in HW 10 may be helpful. You can also directly use the definition of group velocity, i.e., v g = triangle k w (k), taking into account the equation of the ...
*November 12, 2013 by Joy*

**calculus**

d=dmax (1-e^(-kt)) This equation is the result of integrating an ordinary differential equation. Derive that ODE and the associated initial condition.
*March 7, 2009 by dolphin1384*

**Numerical Methods**

Derive the following formulas using Taylor series and then establish the error terms for each. f'(x) approx= (1/2*h)[4f(x+h)-3f(x)-f(x+2h)] f'(x) approx= (1/4*h)[f(x+2h)-f(x-2h)]
*February 26, 2012 by Dan*