An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
The total charge delivered by the electric device is 450 C . This corresponds to approximately 2.81 × 1 0 21 electrons flowing through it. This calculation is done using the relation between charge, current, and time, and the known charge of an electron.
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This question involves completing a conversation with given sentences, which is a common exercise in learning English to practice dialogue skills and comprehension. Here, we have a dialogue between two individuals, Jason and Marie, discussing Marie's background and move to the United States.
Let's go through the conversation:
Jason: Were you born here in the U.S., Marie?
Marie: No, I wasn't. I was born in Europe.
Marie clarifies that she wasn't born in the U.S., instead, she was born in Europe.
Jason: Oh, were you born in France?
Marie: No, I'm from Belgium.
Jason assumes Marie could be from France, a common European country, but Marie specifies that she is from Belgium.
Jason: Really? What city were you born in?
Marie: I was born in Brussels.
Marie provides more specific information, revealing that she was born in the capital city of Belgium, Brussels.
Jason: Were your parents born in Brussels, too?
Marie: Yes, they were. We were all born there.
Marie explains that her family has a shared birthplace.
Jason: And why did you come to the U.S.?
Marie: We came here for my father's job.
Marie's reason for moving to the U.S. is related to her father's employment.
Jason: So when did you move here?
Marie: We moved here in 2009.
The year 2009 marks when Marie and her family relocated to the U.S.
Jason: Really? How old were you then?
Marie: I was sixteen.
Marie states that she was sixteen years old at the time of the move.
Jason: Was it scary?
Marie: No, it wasn't. I loved it!
Despite potential challenges, Marie expresses a positive experience regarding her move to the U.S.
This exercise helps students practice understanding and building coherent dialogues by accurately inserting the provided sentences into the conversation. It also helps with learning about different grammatical structures and cultural elements related to moving to another country.
