When recyclable materials are sent to a recycling plant, they are often not sorted in any particular way. Plastic materials migh
t be mixed in with paper, iron, aluminum, and glass materials
Image courtesy of the U.S. EPA
Which of the following is a way that recycling plants separate iron materials from other materials without applying a contact force
to them?
A. by applying an impact force to the recycled materials
B. by sorting the materials with a robotic arm
C. by applying a magnetic force to the recycled materials
D. by sorting the materials by hand
