Examlex
For a solid uniformly charged sphere of radius R,calculate the electric field at a distance R/2 outside the sphere,divided by the electric field at a distance R/2 inside the sphere.
Risk-Free Rate
The expected yield from an investment that carries no risk of losing money, often shown through the interest rates of government securities.
Historical Data
Past information and records about an entity or market's performance, which are used for research, analysis, and planning.
Betas
A measure of the volatility, or systematic risk, of a security or portfolio in comparison to the market as a whole; it indicates how much the asset's price is expected to move relative to market movements.
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