Chapter 7 - Matter And Materials Flashcards
1
Q
Formula:
Density
A
Density = mass / volume
2
Q
Formula
Pressure
A
Pressure = Force / Area
OR
Pressure = density x gravity x height
3
Q
Formula:
Hooke’s law
A
Force = spring constant x extension
4
Q
What is Hooke’s law
A
The extension of a material is directly proportional to its applied force
5
Q
Formula:
Strain
A
Strain = extension / original length
6
Q
Formula:
Stress
A
Stress = Force / Area
7
Q
Formula:
Young’s modulus
A
Young’s modulus = stress / strain
8
Q
Define Young’s modulus
A
The ratio of stress to strain is the young modulus and this tells us the stiffness of the material
9
Q
Formula:
Elastic potential energy
A
E = 1/2 Force x extension
10
Q
What is elastic potential energy
A
Potential energy stored in an object as result of its deformation
