Two sources of waves are in phase and produce identical waves. these sources are mounted at the corners of a square and broadcast waves uniformly in all directions. at the center of the square, the waves will always produce constructive interference no matter which two corners of the square are occupied by the sources?

Yes

Explanation:

Yes,At the center of the square, the waves will always produce constructive interference no matter which two corners of the square are occupied by the sources because two sources of waves are in phase and produce identical waves.

current flows in a wire

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.