Answer:
Complementary colors.
Split complementary colors.
Analogous colors.
Triadic harmonies.
Tetradic harmonies.
Monochromatic harmonies.
Explanation:
Which two forces act directly on objects that are unable to be viewed by the unaided eye?
Another common household items is AA Alkaline batteries , I found these weigh approx 23 gram of them would have a mass of around 500 +/-5%. Never or unused , same mass