If an equal force of 10 is applied to each of the following answers choices which would be the least affected? A. Cheetah

B. School bus

C. Air plane

D. Humming bird

Wind or electric energy force force of friction

The answer is  a.first and third quarters 

An electromagnet is a material in which the current produces electromagnetism and is passed to the core.  so to fill in the blanks, choices would be better if there were.an electromagnet is a magnet produced by electric current with a metal core

Assuming you're referring to significant figures, none of these answer choices are shown to be zero as significant digits. did you, by chance, forget to add something?