Where does the pattern of the tides come from?

The pattern of the Earth's ocean tides is the result of the interaction of:

-- the changing strength and direction of the force of gravity toward the sun due to its changing position and distance,

-- the changing strength and direction of the force of gravity toward the moon due to its changing position and distance,

-- the rotation of the Earth,

-- the shapes of the coastal boundaries between the Earth's land masses and its oceans.

found in the nucleus

has mass of one amu

answer: (431,2)

step-by-step explanation: