What's an example of a task that requires knowledge of physical objects to perform?
How can you get crumbles out of your keyboard?

What's an example of a task that requires knowledge of physical objects to perform?
To attach LEDs to a brass wire,

What's an example of a task that requires knowledge of physical objects to perform?
To separate egg yolks from egg whites

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