Mechdude
Nov20-10, 06:23 AM
1. The problem statement, all variables and given/known data
A long narrow solid rod has an atomic density 5 \times 10^{28}m^{-3}
each atom has a polarizability of 10^{-40} . Find the internal field when an axial field of 1 V/m is applied.
2. Relevant equations
im not sure what formula to use
but here's one:
p = E_{loc} \sum_{r} n_j \alpha_j
may be the claussius-mossoti equation could be useful,
\sum_{r} N_j \alpha_j = 3 \epsilon_0 \frac{ \varepsilon -1}{ \varepsilon + 2}
3. The attempt at a solution
i don't know how to start, i need a clue.
1. The problem statement, all variables and given/known data
2. Relevant equations
3. The attempt at a solution
A long narrow solid rod has an atomic density 5 \times 10^{28}m^{-3}
each atom has a polarizability of 10^{-40} . Find the internal field when an axial field of 1 V/m is applied.
2. Relevant equations
im not sure what formula to use
but here's one:
p = E_{loc} \sum_{r} n_j \alpha_j
may be the claussius-mossoti equation could be useful,
\sum_{r} N_j \alpha_j = 3 \epsilon_0 \frac{ \varepsilon -1}{ \varepsilon + 2}
3. The attempt at a solution
i don't know how to start, i need a clue.
1. The problem statement, all variables and given/known data
2. Relevant equations
3. The attempt at a solution