A clay block of mass m moving to the right with speed vo strikes a second block of mass 3m moving to the left with the speed v0/3 . The two clay blocks stick together after the collision. There are no outside forces acting on the blocks. How much kinetic energy was lost in this inelastic collision

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

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.