Recent content by berkeman

Or just use a pole across a single scale and tare out the weight of the pole. :wink:

Welcome to PF! :smile:

But when you posted at PF 2 years ago, you were a math undergraduate student. That's a lot of progress in just 2 years!

There are a number of file type suffixes that are not allowed (mostly for malware reasons, I think), but often you can change the suffix to ".txt" to be able to attach it and just tell others to download the file and rename the suffix. (if they trust you, obviously :smile: )

Welcome to PF. :smile: Please be sure to read the PF Rules (see INFO at the top of the page). We do not allow personal speculation or discussing unpublished work here. We discuss mainstream science as published in the scientific literature (peer-reviewed journals and mainstream textbooks)...

Please avoid using all capital letters in your posts. In discussion forums it is considered yelling, and is discouraged. Thank you.

Welcome to PF; it's great to have you here. :smile:

Projectile motion problems are often simplified by assuming no air resistance. That works fine for basic problems with low-velocity projectiles where an answer that is "close enough" to the real world motion is sufficient. But in ballistics, including air resistance in the calculations is...

Welcome to PF! :smile:

Welcome to PF. :smile: For general technical questions, post them in the appropriate technical forum (start the thread by filling out the form at the top of that forum) and include links to your reading that you've been doing and ask questions about that reading. In some of the technical...

Is this question in relation to your optical diffuser question from a day or two ago? If it's a general energy conversion efficiency question, I can move this thread to our Thermodynamics Forum, which would be a better fit for the general question.