Maximo is helping a librarian return books to the shelves where they belong. He picks up books from the librarian's desk. as shown in Figure A. He then carries
them to the shelves, as shown in Figure B. In which figure does Colin do work?
Direction of
movement
Direction of
movement
A. Lifting books
B. Carrying books
Figure A
Hi

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit