It's not a thread. It's a q&a site. You didn't even go for what engineering reason prevents the manufacturing chicargo screws under M4.

Isn't it marginally lighter than air, so it would diffuse around the room/trench. Oil tanks have an earth berm to contain oil during leaks, but berm collects carbon monoxide.

Wouldn't that question be best asked at the manufacturers?

Doubtful BGA pin has more area than a QFP pin.

ROFL errr no hence the comment.

The text on your image is unreadible.

Chip log. The log is supposed to act as a chute, standing vertically, weighted down by lead, staying stationary as ship sails away. After use sailor sharply pulls on it making it go flat too easily pull it in. Hence the triangular shape.

As demonstrated by the internet, you can do anything you want. Is it a good idea. No. It's a real bad idea to cut a hole in a microwave. And you are using it for something beyond it's capabilities. Doubtful you will get any conservative engineers to condone it, but I have been wrong in the past. We don't do anything without math to back us up.

Since Power and Apparent Power are positive, pf is positive. Sign is handled by leading / lagging.

Code. How does a driver stall? As in motor it is driving stalls? Does it work with no-load?

Cohesion and adhesion. Water likes to stick to itself and water likes to stick to other things.

Voltages on primary and secondary side? Turns ratio? Current times voltage (assuming single-phase) would give you apparent power. Your hypotoneuse of the power triangle. What is the load? Power factor?

You need to put that in your question. The site supports mathjax. Put your equations in. The more speciic you are the easier it will be for someone to help you.

The math!

You should list the common heat equation, but will there be any heat flow if the spaces on either side of the wall are at the same temperature?