Answer:
A physical change
Explanation:
You are wiping chalk particles from the board to the eraser which is just changing the location of the chalk particles, a physical change.
you're not changing the chalk into a new substance or causing a chemical reaction, which would be a chemical change.
5. D. 25-30
6. B. Accel 1 has a constant rate of acceleration; Accel 2 accelerates at different rates during the trip. Hope this helped.
A rat a bug and a dog there is no animals ill take brain thou ;D
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Electrical energy = Q x V
Energy = 2 x 40
= 80
The correct answer is B.