Recent content by kidia

I have a question here, A uniform doped n-type silicon substrate of 0.1ohm-cm resistivity is to be subjected to a boron diffusion with constant surface concetration of 4.8*10^17/cm cubic.The desired junction depth is 2.8*10^-6m .Calculate the impurity concetration for the boron diffusion as a...

Can anybody help me on this question,Show whether or not the following fields are conservative: E=yz^2i+(Xz^2+2)j+(2xyz-1)k E=-(x^2-y^2)i-2xyj+4k I don't think if am right I want to start by comparing i follow by j and z,example yz^2=-(x^2-y^2)

Can anybody explain to me what and how a phase shifter can be implemented using BJT.or give me the site which can get more details about this.

Can anyone help me on this question,Using \epsilon-\delta definition of a limit to show that \lim \frac {2x^3-y^3}{x^2+y^2} = 0 (x,y)\rightarrow(0,0)

I need a help on this question,Show that if u=x-y,v=xy and w=f(u,v) then x\frac{dw}{dx}-y\frac{dw}{dy}=(x-y)\frac{dw}{du}.

Please can anybody help me on this two functions it confuse me because has two and thee variables. Find the Domain and Range of each of the following functions a)f(x,x)=\sqrt{\frac{x-y}{x+y}} b)f(x,y)=\[in{(x^2+y^2+z^2)}

I have a question here I will appreciate for any idea,The mean of distribution is 5.The second and third moments about the mean are 20 and 140 respectively.Find the moment of the distribution about 10.

I have one question here,I fail to understood what is Q of the system,is anybody has an ideal on this? An object of mass 2 kg hangs from spring of negligible mass. The spring is extended by 2.5 cm when the object is attached. The top end of the spring is oscillated up and down in SHM with...

Can anybody give me the hint where to start on this question? Two simple harmonic oscillators of the same frequency and in the same direction having amplitudes 5 mm and 3 mm, respectively and the phase of the second component relative to the first is 30°, are superimposed. Find the amplitude...

So you want to tell me that if I lock you in aircondition room for 3 days your going to faint.

What about oxygen,does it play any part in bringing oxygen in the room?

I have very basic question, one function of domestic air condition is to cool air can anybody tell me other functions more than that?

Please Rtharbaugh1 if this problem is challenging to you,leave others to work on it.

I have a question here A rectangular plane loop with dimensions 250 mm by 180 mm is pivoted to rotate about the z axis. The long side of the loop is along the y-axis and the plane of the loop makes an angle of 45 degrees with the y-axis. If a uniform magnetic field of magnitude 300 mT is in...

How can I Compare the magnitudes near the earth’s surface of the weight of an electron and a typical magnetic force exerted by the earth’s magnetic field (B = 10-5T) on an electron with speed 10 m/s. As I understood Weight of electron = mg Magnetic force=qBv am I right?