Problem $2(20$ pts $)$: The image below shows a real$-$world example of galvanic corrosion. As seen in the image, the galvanized$-$steel bolt $($zinc coated steel$)$ has visible rust while the nut $($plain carbon steel$)$ remains unoxidized. In the space provided, draw out a galvanic cell model that shows how the rust is developing on one of the two electrodes. Be sure to label each part of the galvanic cell $($there are $5)$ and point out which part of the real$-$world system acts as each component.