Materials Flashcards
1
Q
Define Density?
A
The density of a substance is defined as its mass per unit volume.
2
Q
the first card
A
noah
3
Q
What is the unit of density?
A
Kgm^(-3)
4
Q
What would you measure if your calculating the density of a sphere?
A
Its Mass, and then its volume using the formula:
4/3 πr^(3) and then use the equation P=M/V
5
Q
What would you do to measure the density of a liquid?
A
Measure the mass. pour the liquid into a measuring cylinder. then use the equation P=m/v
6
Q
Define Hooke’s Law?
A
Hooke’s law states that the force needed to stretch a spring is directly proportional to the extension of the spring from its natural length.
7
Q
What is the equation for Hooke’s law and what is K known as?
A
F= KL. K is known as spring constant or stiffness.
