Sharon is running in a relay race. She is initially running at 5.2 m/s when she grabs the baton, and then she speeds up until she reaches the finish line 0.5 min later. Sharon's average speed was 4.9 m/s . What was Sharon's speed as she crossed the finish line?

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.

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.