Recent content by scarlets99

dxdy? So the integral between 0 and 2, and 0 and 4 F.dxdy

Thank you cepheid. What is the value of dl?

Homework Statement 1.Calculate the work done by the force F=i cos(pix/4) + j y2 along the path y=x2 in the x-y plane from (0,0) to (2,4). 2.Is the force F conservative? Explain. Homework Equations Work = Integration between a and b of F.dl The Attempt at a Solution 1. I know...

Homework Statement 1. Consider a cube with vertices at A=(0,0,0) B=(2,0,0) C=(2,2,0) D=(0,2,0) E=(0,0,2) F=(2,0,2) G=(2,2,2) H=(0,2,2) A)Calculate the flux of the vector fieldF=xi through each face of the cube by taking the normal vectors pointing outwards. B)Verify Gauss's divergence theorem...

So how would you draw the diagram for a circuit with impedance 1/Z, i.e. 1/Z=(1/iwL+R1)+(1/R2+1/iwC)

How do you express impedance in terms of w(omega), R, L and C knowing the circuit diagram. I understand that for R Z=R L Z=iLw C Z=-i/wC What is the effect of having components in parallel/series, could someone please give an example of a circuit and it's impedance expression...

Homework Statement What is the general solution to y'' - 2(y')^2 = 0 ? Homework Equations The Attempt at a Solution Let u = y ' u ' - 2u^2 = 0 u ' = 2u^2 u = (2 / 3)u^3 + C This cannot be solved using separation of variables, what is done?

Homework Statement In a circuit with capacitance C, inductance L and resistance R the current I(t) satisfies the differential equation L d2I(t)/dt2 + R dI(t)/dt + I(t)/C = V(t) where V (t) is the voltage supplied. a) Find the general solution to this differential equation for the...

Hi could someone please explain how this can be done please 1. The population P satisfies the differential equation dP dt = X(P) − Y(P) , where X(P) is the birth rate and Y(P) is the death rate. Find the general solution P(t) to this differential equation for the case that X(P) = k1(sqrt)P...

Hi could someone please explain how this can be done please 1. The population P satisfies the differential equation dP dt = X(P) − Y(P) , where X(P) is the birth rate and Y(P) is the death rate. Find the general solution P(t) to this differential equation for the case that X(P) =...