some form of destructive interference. if phase is 180 degrees out, destructive = darkfringe or quiet in sound
For figure one the “+” are protons and the “-“ are electrons for the second one the middle is the nucleus and the other is the orbit
Explanation:
The forces acting on a massless object (spring, hook, string or wire, if considered massless) will always balance. Balanced forces acting on an object cause it to compress or stretch. The forces acting on a mass will never cancel.
