2. Make a prediction (initial model) for what could be happening inside of the tube of the car that causes the car to "rollback” (i. e. change direction). Your response should focus on the
rubber band and not the mass. Then provide reasoning to support your initial model in terms
of energy transfers and conversions.
Initial Model:

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.