13 Based on the results of Experiment 1, approx-
imately how long, from time zero, did it take the
voltmeter to reach a reading of 10.7 V?
A. Less than 10 sec.
B. Between 10 and 20 sec.
C. Between 20 and 40 sec.
D. More than 40 sec.

it would be c. predictability

pecialized keyboards

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.

false

explanation: