1.1 Basic Physics Flashcards
1
Q
What is the word given to an equation where the units for both side are the same?
A
Homogeneous
2
Q
What is a scalar?
A
A quantity that has magnitude only
3
Q
What is a vector
A
A quantity that has magnitude and direction
4
Q
What is the centre of gravity
A
The centre of gravity is the single point within a body at which the entire weight of the body may be considered to act
5
Q
What is the principle of moments?
A
For a system to be in equilibrium, ∑ anticlockwise moments about a point = ∑ clockwise moments about the same point
6
Q
What is the absolute uncertainty?
A
The margin of error for any measuring equipment (±) that tells us a range/ percentage of where the result could lie
