What would be the effect on the Earth's tides if the diameter of the Earth were very much larger than it is? If the Earth were as it presently is, but the Moon were very much larger and had the same mass?

High tides and will get balanced if the mas were same.

Explanation:

If the earth would be doubled in size of the diameter and be around the 16,000m lies the planet mas would increase about eight times and thus the forces of the gravity would also be double and would be twice as long and large thus moon effects on the one side of the planet would be larger and produce more and high tides. But if the mass of the moon would be the same as that of the earth then the mass would be balanced by the different values of the weights. As there is a large force on a large mass and visa versa