Recent content by jije1112

I am undergraduate physics student,and I want to become a theoretical physicist. I need some ideas about fields to look at it that can inspire me . I do not have specific field that I like the most in physics..so I need your help

Homework Statement I need to proof that Rodrigues’ formula satisfies Laguerre differential equation Homework Equations Rodrigues’ formula of Laguerre Laguerre differential equation The Attempt at a Solution first,I have to calculate = I tried to sum both terms and this is what I got...

Homework Statement What are the partial half of 22Na for decay by a)Ec b) β+ emission Homework Equations λ=ln2/T1/2 The Attempt at a Solution this what I do T1/2 =2.602 Yr λ=ln2/2.602 λ=0.266 yr-1what is the difference between a)Ec b) β+ emission there is no Percentage of each decay type.!

Homework Statement what is the mass in g of the activity? (a)1μCi 241Am Homework Equations A = λN λ = ln2 / T1/2 The Attempt at a Solution A = λN 1μCi = λN N=1μCi/λ N = ( x /241 mol) × (6.022 × 1023 nuclei mol-1 ) 1μCi/λ=( x /241 mol) × (6.022 × 1023 nuclei mol-1 ) X=1μCi (241)/λ(6.022×...

I do not know what to do with this Question

Homework Statement If a radioactive sample of 59Fe (t1/2= 44.496 d) has an activity of 1000 disintegrations per minute, what weight of 59Fe is present? Homework Equations

I have to use formula to find it

In an experiment one observes the characteristic Ka X-rays of two elements at energies of 6.930 and 7.478 eV. The higher energy line is due to Ni. What element is responsible for the lower energy line?

Legendre functions $Q_n(x)$ of the second kind \begin{equation*} Q_n(x)=P_n(x) \int \frac{1}{(1-x^2)\cdot P_n^2(x)}\, \mathrm{d}x \end{equation*} what to do after this step? how can I complete ? I need to reach this formula \begin{equation*} Q_n(x)=\frac{1}{2} P_n(x)\ln\left( \frac{...