Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. Predict how changing each variable will affect the resistance.
I just purchased crackle subway tile (3x6) for our backsplash. As I was shopping around it seemed that $12-15 per square foot was the average price. You can get cheaper but they were VERY basic. I ended up with a Sonoma tile which was hand molded and cost $20 square foot.
1 Cut the caulk around the backsplash, if you have it. Use a utility knife to cleanly cut and strip away the caulk holding the backsplash in place. Place a putty knife next to the wall and use a crowbar to pry away the backsplash until it is removed.  Unscrew your countertop from the top, sides or underneath.