What's an example of a task that requires knowledge of physical objects to perform?
How to boil liquid?

What's an example of a task that requires knowledge of physical objects to perform?
Petrify insect for collection.

What's an example of a task that requires knowledge of physical objects to perform?
To hold a nail while hammering it

What's an example of a task that requires knowledge of physical objects to perform?
how to use spray paint