Question 1

We need some Minecraft education mode in Khan Academy

Accepted Answer

Yea we need Minecraft

Question 2

why is it that when you slide down a slide or get out of a car and then touch something or someone you get shocked?how does this happen?

Accepted Answer

it's called static electricity ,
static electricity is when your hand (or something else ) builds up electricity and all of it gets released at once when you touch something metal 
i hope this answers your question
i know this is a very cheesy ending but
have a nice day

Question 3

Is the letter W and M attracted?

Accepted Answer

No because they are not objects that you can feel.

Question 4

wait we have magnets that have positive and negative charges what would happen if they were both neutral would they stick together anymore if someone know that answer to this pls tell me this is facinating

Accepted Answer

don't confuse yourself between magnetic forces and electric forces. in magnets you can't make them neutral because the magnetic field of the magnet exerts the force. over here in electric forces its the force between charges. if you want you can remove the magnetic field of a few magnets by various methods but then it wont stick to anything.

Question 5

Does a - and a - attract?

Accepted Answer

nope. they repel
same charges repel

Question 6

So it's like magnets, opposite forces attract and the same forces repel
But what does it mean for a charge to be "positive" or "negative"? Like, what's the difference?

Accepted Answer

A charge is positive when there are more protons than electrons in the atoms of the object. A charge is "Negative" when there are more electrons than protons in an object. This is also why only some objects can use electric forces. They are the only objects that can easily donate or lose electrons.

Question 7

can i attract to anything

Accepted Answer

In the context of physical objects, you cannot directly attract things to yourself with the force of gravity or electromagnetism like larger celestial bodies can. However, you can exert forces on objects and move them by physically interacting with them. For example, you can pick up objects, push them, or pull them towards you by applying force through your muscles.

Question 8

how does this happen

Accepted Answer

Electrical forces occur due to the interaction of charged particles, such as electrons and protons. These charged particles exert forces on each other based on their charges and the distance between them.

The fundamental property responsible for electrical forces is electric charge. Electric charge can be positive or negative. Like charges (positive-positive or negative-negative) repel each other, while opposite charges (positive-negative) attract each other.

The interaction between charged particles is mediated by the electric field. An electric field surrounds any charged particle and exerts a force on other charged particles within its influence. When a charged particle enters the electric field of another charged particle, it experiences a force due to the interaction of the electric fields.

According to Coulomb's law, the strength of the electrical force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, the electric force (F) between two charged particles can be expressed as F = k * (q1 * q2) / r^2, where q1 and q2 are the charges of the particles, r is the distance between them, and k is the electrostatic constant.

Electrical forces are responsible for various phenomena in our daily lives, such as the attraction or repulsion of magnets, the flow of electric current in wires, and the behavior of charged particles in electric fields. They play a crucial role in understanding and explaining the behavior of charged particles and the functioning of electrical devices.

Course: Middle school physics - NGSS > Unit 2

Electric forces

Key points:

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