Recent content by KTiaam

Could you explain a little bit more? So use only p(t) = P0e^kt?

Homework Statement Population Dynamics: Logistic model. Suppose the environmental carrying capacity of the population is 100000 and the growth rate a t=0 is 5%. . If the population starts at 10000, how long does it take for the population to reach half the carrying capacity? dp/dt = A P...

Current goes from a high to low potential so it goes from right to left! Thank you for all the help Miles! I might have more questions incoming lol.

so that means the voltage drop across the resistor is 2v, then using V=IR i get 2mA? or do i use Nodal Analysis?

The thing that threw me off, is what voltage to use with r1, But based off of the orientation of the current source, I use Vb?

Homework Statement Need help on part a. and c. The Attempt at a Solution Part A Since Va = 4V then pin 2 and 3 also have 4v. Would that mean that Vin is = 4v as well? Im just confused how to find I1. Also I am not sure how to find Vc. Part C As for part c, I am having trouble with it...

Homework Statement [Picture of Problem](http://i.imgur.com/7q4yj8O.png) Homework Equations [/B] * It is dealing with drawing the DC model of a circuit * Now i know when drawing a DC Model, all capacitors are open (or ground) and AC sources are grounded as well. * In this specific problem, i...

Homework Statement How many anions are there in 1.50 g of MgBr2 Homework EquationsThe Attempt at a Solution 1.5 g MgBr2 x (1 mol MgBR2/184.3 g MgBr2) x (6.022 x 1023 anions/mol) which gave me answer of 4.91 x 1021 the correct answer is 9.81 x 1021 am i missing a step, or do i have to...

the number of moles is 4? I got 4 from the balanced equation?could you explain more on what I'm doing wrong?

Homework Statement How much energy is required to decompose 765 g of PCl3, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and may be useful. 4 PCl3(g) → P4(s) + 6 Cl2(g) ΔH°rxn = +1207 kJ The Attempt at a Solution 765 g PCl3 x 4 mol PCl3/137.32 g PCl3 = 22.28 mol...

Δz = Δx +Δy

Homework Statement Suppose that z is a linear function of x and y with slope -1 in the x direction and slope 4 in the y direction. Part a) A change of −0.1 in x and 0.3 in y produces what change in z? z = ? Part b) If z=5 when x=7 and y=6, what is the value of z when x=7.1 and y=5.7? z = ...

Thank you BvU appreciate the help, more questions may be on the way, its been a rough day.

i multiplied everything by 3, can i not do that?

Homework Statement Find the linearization of the function ƒ(x,y) = sqrt(29 - 4x2 - 4y2) at the point (2,1) Homework Equations [/B] Point (a,b) L(x,y) = Linearization L(x,y) = ƒ(a,b) + ƒx(a,b)(x-a) + ƒy(a,b)(y-b) The Attempt at a Solution [/B] ƒ(2,1) = 3 ƒx(x,y) =...