Chapter 18, Problem 54P

*BIO Heart’s dipole charge The heart has a dipole charge distribution with a charge of $+1.0\times {10}^{-7}\text{C}$ that is 6.0 cm above a charge of $-1.0\times {10}^{-7}\text{C}$. Determine the $\stackrel{\to }{E}$ field (magnitude and direction) caused by the heart’s dipole at a distance of 8.0 cm directly above the heart's positive charge. All charges are located in body tissue of dielectric constant 7.0. What is the force exerted on a sodium ion (charge $\text{+1}{\text{.6 × 10}}^{\text{-19}}\text{C}$) at that point?