Answer:
The electromagnetic field propagates at the speed of light (in fact, this field can be identified as light) and interacts with charges and currents.
Explanation:The electric field is produced by stationary charges, and the magnetic field by moving charges (currents); these two are often described as the sources of the field.
Answer:
The river bank can expand due to the water breaking apart which can cause sediment to move and change/erode
"Compared with its original speed after release, its speed when it returns to the same position is about <span>b. the same as, since gravity has now acted up on. </span>
Answer: By a mechanism that is not fully understood, charges in a thundercloud are separated such that the lower portion of a cloud takes on a negative charge while the upper portion is positive. In addition to the negative charge on the base of the cloud, there are small pockets of positive charge on the base.
