8. A small block B is placed on black Ad mass5 kg and length 20 an, nema horizontal force of 10 N is applied on black as all the races and frictionless and block B is at the net end of block A, the time in which the B separates from As​

pretty sure it's false

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;

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.