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Astrid1:

A teacher lifts a book off a table. The book gains potential energy. Where does this energy come from? The energy comes from the teacher. The energy came from the air. The energy comes from the book itself. The energy comes from Earth. Sorry this isnt letting me change the subject...

Astrid1:

I think its 1.... Am I correct?

Imagine:

No, number one is inncorrect.

Imagine:

actually, yes. number one is correct.

Imagine:

I thought she dropped the book.

Astrid1:

Lol Uhmmm Otay Thanks!

Imagine:

Sorry about that. :0

Astrid1:

Its okay...

Astrid1:

Ah U changed ur pfp//

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