In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 

To test batteries to see if they're any good,
drop the batteries and see if they bounce once to see if they're good.

How can I remove a water stain from an oak table top?
Put some regular tooth paste on a tooth brush, moisten it, then gently rub it into the stain. After a minute, wipe off the tooth paste. The stain will disappear as the wood dries.

How to ensure a counter is flat without a spirit level?

Place a small golf ball on the counter and adjust the counter or surface until the ball stays still