'A' and 'C' talk about energy being created and destroyed. That can't happen.
'D' trailed off in the middle, and we don't know WHAT it was talking about.
'B' is the only correct statement.
The answers to question 4 d
Answer:
Scientific definitions for ferromagnetic
The property of being strongly attracted to either pole of a magnet. Ferromagnetic materials, such as iron, contain unpaired electrons, each with a small magnetic field of its own, that align readily with each other in response to an external magnetic field.
Explanation:
The magnetic particles are mixed with other substances to make it flexible.
1 hour = 3600 seconds.
Energy dissipated = I²Rt = 8²×20×3600 = 4608000 J