Saturday Mac riddles 80

Here are this weekend’s riddles to entertain you through whatever you’re now allowed to do.

1: Hold me to go from g to ©, or v to √.

2: Capacity, amplitude, and file system.

3: Cotton, silk, structure, silicon interconnections.

I will post the answers first thing on Monday morning.

Please don’t post your answers as comments here: it spoils it for others.