What is true about constructive interference?A. Amplitudes in the opposite direction interfere to make larger waves. B.Amplitudes in the same direction interference to larger waves. C.Amplitudes in the same direction interference to make smaller waves.

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Which compound contain an iron with a 3+ charge