Select the statement that correctly completes the description of phase difference.
phase difference describes:
o the difference in the phase angle between any two waves at any given position along the waves.
o the shift between the positions of corresponding crests of two waves of the same frequency.
o the difference in the frequencies of two waves at a given time.
o the displacement of a wave particle from its undisturbed position at the origin.

The difference in the phase angle between any two waves at any given position along the waves.

Explanation:

The phase difference between two waves is defined as the difference between its two phase angles, measured at the same time, but not always at the same point in space. In other words, the phase difference is when the waves have the same frequency, but reach their zero value at a different time.

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

increase masses, decrease separation