4. An object falls from the Transco Tower in Houston and takes 15 seconds to reach the ground, c. What is its acceleration at the 2nd second?
d. What is its acceleration at the 5th second?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

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.

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.