The colors that you see on the CD are created by white light reflecting from ridges in the metal. When light reflects off or passes through something with many small ridges or scratches, you often get rainbow colors and interesting patterns. They are called interference patterns.
P = IV
I = P/V = 30 / 120 = 0.25 A.
Current = 0.25A
False the correct answer is chemical bonds instead of thermal energy
Kinetic energy is greatest at the lowest point of a roller coaster and least at the highest point