Category: Questions and Answers

Question and answers.

Naming things

I live in China. Maybe this problem is not unique to people here, but regardless, Many junior programmers do not know English (Most documentation have Chinese translations). All senior programmers do know English. So, an awkward situation arose. The senior programmers name things in English (e.g. foo, var, myClass, &c), whilst the junior programmers name…

Suppose I have a container of water with a ball floating on top of it. I put it outside overnight and the water freezes. Since the water’s volume increases as it freezes, the ball is raised. Where does the increased gravitational potential energy come from?

I noticed this morning that I had left a watering can outside and it was full of ice. I suppose the ball is not completely necessary as I could be asking about the gravitational potential energy of some of the water itself. Since the water expands as it freezes into ice, and its shape is…

How could a high-altitude surveillance balloon be captured?

I guess it's obvious what I'm referring to, i.e. current events over Montana. https://en.wikipedia.org/wiki/2023_China_balloon_incident The thing is up in the stratosphere, higher than most planes (and certainly rotor/propeller aircraft) can reach. I haven't found any discussion of this question online, and I'm sorry if this isn't strictly a 'science' question but there is an "Engineering"…