I needs help with the first question

The Disiplaine wand

Explanation:

Earlier in the book (I believe chapter 7,) they talk about using a wand to smack younger children when they misbehave, and they do the same with the Old. I would go back to the chapter and read it before hand before answering though, hope it has helped. :)

Radar is most often used to "determine exact locations".

Radar refers to a detection framework that utilizes radio waves to decide the range, point, or speed of articles. It can be utilized to distinguish flying machine, ships, rocket, guided rockets, engine vehicles, climate arrangements, and territory. A radar framework comprises of a transmitter delivering electromagnetic waves in the radio or microwaves space, a transmitting reception apparatus, an accepting receiving wire (regularly a similar receiving wire is utilized for transmitting and getting) and a recipient and processor to decide properties of the object(s).