Define Women Empowerment.

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

By what primary heat transfer mechanism does the sun warm the earth?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.