Physics homework?

Hello, While preparing for my university course, I've come across a question that I'm unfortunately stuck on. I would greatly appreciate any help. The question is: A diffraction grating has 600 lines/mm. Yellow light from a street lamp is shone onto the grating. The yellow light contains two main wavelengths – of 589.6 nm and…

What would you call Americans between 18 and 21 years old in German?

A minor would be under 18. Is there a specific term for someone between 18 and 21, since you're not allowed to drink alcohol, for example? I have a feeling there's probably something in English, but there probably isn't a German equivalent. Either way, the only thing that comes to mind is "underage."

How do you write a mediation about the environment?

Hello, How would you write the beginning of a mediation about the environment? It involves being a member of an environmental group and giving a short presentation about the negative changes in the environment and the reasons behind them. All in German. Would anyone be so kind as to give me a little help? I…

attend high school?

Hello! I'm a boy living in Germany, and I have American-born family members who also live in America. Is it possible for a German to go to high school in America? I mean, even for a year abroad or something like that? I would really like to go to high school because I'm very interested…