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In English / High School | 2025-07-03

An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

Asked by momzsons7452

Answer (2)

In a device delivering a current of 15.0 A for 30 seconds, the total charge is 450 C. This corresponds to approximately 2.81 × 10²¹ electrons flowing through it. Thus, many electrons move when a significant current passes over a period of time.
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Answered by Anonymous | 2025-07-04

To correct Marisa's note to Elena, we need to identify and fix common grammatical and punctuation errors. Here's a revision of the note provided, with some explanations for the changes:
Dear Elena,
Do you like reading? I do, and two of my friends like it too. However, sometimes there are too many things to do, and I don't have time to read. Do you buy a lot of books? I don't. I use the library. When I leave school, I don't know whether I want to teach or write books. What about you?
Bye for now!
Love,
Marisa
Let's look at each of the corrections made:

Added a comma after "I do" to separate independent clauses.

Replaced "But" with "However," at the beginning of a sentence for a more formal tone, and added a comma after it.

Added a comma between "things to do" and "and" to separate independent clauses.

Added a comma after "school" to correctly separate clauses.


Each of these changes helps improve the readability and grammatical correctness of the letter, making it clearer and more polished.

Answered by MasonWilliamTurner | 2025-07-06

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