In the year 2030, what percentage of our energy is predicted to come from wind? PLEASE ANSWER QUICKLY

1-5%

20-25%

5-10%

15-20%

What is the frequency of a light wave with a wavelength of 620nm

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical