What's an example of a task that requires knowledge of physical objects to perform?
How do I know when my beaten egg whites are ready to use for a sweet vanilla souffle?

What's an example of a task that requires knowledge of physical objects to perform?
To quickly clear out a room full of cigarette smoke,

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

What's an example of a task that requires knowledge of physical objects to perform?
plastic bag