To be complete and accurate, a model of how material is cycled on Earth would need to include all of the following EXCEPT– a. radiation from the Sun.
b. heat from Earth’s interior.
c. movement of air, water, and rock.
d. position and motion of Earth.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

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.