A magnet is brought near a compass needle and the needle moves.
Which explains this?

Select one:

The compass needle applies a force to the magnet causing it to move.

Mechanical energy from the magnet forces mechanical energy on the needle.

Earth's electrical energy applies a force to the compass needle causing it to
move.

Magnetic energy from the magnet applies a force to the compass needle causing
it to move.

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.