Often, waves are said to be "out of phase" with one another. This means that one wave is shifted so that the peaks and troughs are not simultaneous. Which type of interference could be seen as "out of phase"?

positive

negative

Negative

Explanation:

When two waves come close to one another, their effects add together. ... In fact, if the two waves (with the same amplitude) are shifted by exactly half a wavelength ... The resulting combined wave will have no crests or troughs at all, and will ... That means that there will always be constructive interference at that spot, therefore its negative.

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:

a.) is the correct answer.

explanation: