What's an example of a task that requires knowledge of physical objects to perform?
Open a can using a can opener.

What's an example of a task that requires knowledge of physical objects to perform?
To hold down a keyboard note without using your hands,

What's an example of a task that requires knowledge of physical objects to perform?
To keep your dog's coat healthy,

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