AP Physics 1: 2.5 Properties of Objects and Systems
It's not the electron's fault it keeps bringing a bunch of negative energy to the room.
|AP Physics 1||Properties of Objects and Systems|
|Science Practice 4||Using data collection strategies|
so make sure to know how many answers you're supposed to give. To answer this
question, we need to remember that electrons have negative charges, like our [electron pictured]
cousin who's always down on everything. But this sphere is like baby bear's porridge-- [negative cousin]
not too positive, not too negative. Right in the middle just chilling, which means
it's made up of positively charged particles and negatively charged [neutral sphere pictured]
particles. It can't be made up of only neutrons--that just doesn't work. So what
happens when this electron comes strolling on up? Well, it's only close to
the sphere, it's not actually touching it, so the sphere's charge isn't going to [electron approaches sphere]
change. That means answer A is one of our correct choices. But since the particles [A selected]
within the sphere do have charges, well, they're going to react to this electron.
The positive particles within the sphere will be down to party with Mr. Electron, [Mr. Electron is not for everyone]
and the negative ones will want to get as far as possible from him. So
they'll be shifted around in that sphere as best they can.
That means the other correct answer is C, the sphere's internal charges will be [C selected]
redistributed. Since the sphere's charge isn't going to change, options B and D
are both incorrect. So just because the electron's a real downer, it doesn't [B and D are ruled out]
mean the sphere is going to change its charge. Yeah, they'd have to actually
be connected for that to happen, and speaking of which, maybe it's time we [sphere doesn't change its charge]
deleted that cousin from our Instagram. It really bums us out.