What is necessary for a metallic bond to form?

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Asystematic approach to problem solving is called a (an)