What I understand is that the β parameter of the npn transistor is temperature dependent. Increasing the temperature increases the collector current and hence the LED turns ON. But I don't understand the resistor arrangement.Also I can see that the diode is keeping the Base-Emitter junction in...
This is written on Greiner's Classical Mechanics when solving a Tautochrone problem.
Firstly,I don’t understand why we didn’t use the term ##m=0##
and Sencondly, how the integrand helps us to fulfill the Dirichlet conditions. That means,how do we know that the period is 1?Thanks
What you have calculated is the potential difference between two coaxial cone ,where the inner one has a potential of ##V## at ##{\theta}_1## and the outer one has a potential of 0 at ##{\theta}_2##.
So check your calculation again,and find the right equation which fulfill the boundary...
Homework Statement
Think of a drop of radius ##R## deposited on a fibre of radius ##b(b<<L)##.Find ##{\Delta{P}}##
Homework Equations
The relationship between excess pressure and the surface tension is given by Yong-Laplace equation,
$$\Delta{P} = \sigma{(\frac{1}{R_1}+\frac{1}{R_2})}$$
The...
Homework Statement
A superconducting spherical shell of radius R is placed in a uniform magnetic field ##\vec{B_0}##
1)Find the magnetic field everywhere outside the shell
2)the sutface current density
Homework Equations
Inside the shell the net magnetic field is 0, and at the surface also...