Unit 2: How do forces and matter interact? Flashcards
1
Q
Force
A
- A push or a pull
- Attractive or Repulsive
- Measured in Newtons
2
Q
Gravitational Force
A
- Caused by all Mass
- All matter attracts matter
- Only Attractive (to our knowledge)
3
Q
Electromagnetic magnetic force
A
- Caused by electrons in groups of atoms
- Groups of matter for magnetic dipoles (north and south)
- Can be repulsive and attractive based on different combinations. (N & S)
- Earth is a magnet - presence of iron
4
Q
Electromagnetic electric force
A
- Caused by electrons and protons
- Differing charges in electrons and protons (+ and -)
- Can be repulsive and attractive based on different combinations (+ & -)
- Masses in the same gravitational field are accelerated by the same amount.
5
Q
Strong Nuclear Force
A
- Found Inside Nucleus
6
Q
Electroweak Force
A
- Electromagnetic + Weak Nuclear Reactions
7
Q
Static Electricity
A
- Insulators are rubbed together, friction causes the transfer of negatively charged particles making the two substances positively and negative charged.
- Like charges repel, opposite charges attract
- Convection current is formed
8
Q
Frictional Force
A
- Force generated by surfaces in contact with each other
- Always repels motion
9
Q
Applied Force
A
- A push or a pull created by a moving object
10
Q
Air Resistance/Drag Force
A
Force opposing movement by air and other particles.
11
Q
Tension Force
A
- Twxz `he force that is transmitted through a rope, string or wire when pulled by forces acting from opposite sides.
12
Q
Normal Force
A
- Also known as thirdlaw force
- Two surfaces touching each other
13
Q
Gravitational Constant
A
- 6.67408 × 10-11 m3 kg-1 s-2
- used to determine gravitational acceleration
14
Q
Coulumb’s Constant
A
- 8.9875517923×10⁹ kg⋅m³⋅s⁻²⋅C⁻²
- used to determine strength of charges
