FOUR EASY PHYSICS QUESTIONS!!!! 1.)How many different kinds of charges are there

Question

FOUR EASY PHYSICS QUESTIONS!!!!

1.)How many different kinds of charges are there? Select all that apply   
Up   
Neutral   
Down   
Positive   
Negative

2.)What does a proton have? Select all that apply.   

Two up quarks and one down quark

Mass

One neutron minus one electron   
Two down quarks and one up quark   
A charge of +e

3.)What does a neutron have? Select all that apply.

Mass

Two up quarks and one down quark   
A charge of +e   
Two down quarks and one up quark   
One proton plus one electron

4.)What is true about an insulator?   
An insulator can have charge but never eccess charges   
An insulator is always free of charges   
An insulator allows charges to move freely   
An insulator does not allow charges to move freely

Explanation / Answer

1. positive and negative

2.A proton, composed of two up quarks and one down quark.

Mass

3. Two down quarks and one up quark

mass

4. An insulator is always free of charges

An insulator does not allow charges to move freely

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