# Recent content by tarq

1. ### Matrix Operator Question

Homework Statement The matrix representation of an operator is \left( \begin{array}{cccc} 1 & 0 & a & 0\\ 0 & 1 & 0 & b\\ a & 0 & 1 & 0\\ 0 & b & 0 & 1\\ \end{array} \right) Show that \frac{1}{\sqrt{2}} \left( \begin{array}{cccc}1 & 0 & 1 & 0\end{array} \right) is an eigenstate of the...
2. ### QM step potential problem

Homework Statement Consider particles incident on a one dimensional step function potential, V(x)=Vphi(x) with energy E>V. Calculate the reflection coefficent for particles incident from the right (Barrier height=V at x>0, Barrier height=0 at x<0). Consider the limits as E tends to V and E...
3. ### Water heater and area of sunray gatherer

Hi there! ur on the right track by finding the energy required to raise the temperature of the water by 20 degrees celsius. next remember that the power required to raise the temp of the water is equal to the integral of the intensity of light hitting the solar collectors with respect to the...