What's an example of a task that requires knowledge of physical objects to perform?
To prevent bacteria getting on your hands after washing them,

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

What's an example of a task that requires knowledge of physical objects to perform?
How to Be More Likeable

What's an example of a task that requires knowledge of physical objects to perform?
How do I clean off a cranberry stain from my clothes?