What's an example of a task that requires knowledge of physical objects to perform?
Dispose off left over paint.

What's an example of a task that requires knowledge of physical objects to perform?
How can I store contacts without a lens case?

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 ensure balloon doesn't tear when using it to protect iPod in pool.