Do Now

Find the power of a wind turbine with diameter $90 m$ and tip of blade velocity $12 \frac{m}{s}$. The density of the air is $1.25 \frac{kg}{{m}^{3}}$.

The Big Idea

A light strike on a solar panel with $450 nm$. What is the frequency

Exit Slip

A light strike on a solar panel with 450 nm$. The work function of the solar panel is $3.06 * {10}^{-19} J$. Find the kinetic energy of the ejected electron.

Homework

Answer the following: Did Mr. Bari find the Recycle Bin 13 years later? (Hint: Video 1) and Why did Refath change his behavior? (Hint: Video 2)