Two bullets with the same mass are fired at speeds of 30 m/s and 60 m/s respectively. What is the ratio of KE between the two shots?
Find both KE's.

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

force tends to be low and long diustance masses are high

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.