AS basic physics (chap 1) Flashcards
1
Q
what are the 7 base quatities
A
mass
length
time
current
absolute temp
ammount of substance
luminious intensities
2
Q
what is the formula for pressure
A
force / area
kgms-2
3
Q
what does dimensionless quanitty mean
A
a qauntity that has no unit
4
Q
define the term homogenity
A
if terms being added or subtracted on either side of an equation–> have the same unit
5
Q
mention the 2 natrures of errors
A
1) random error
2) Systametic error
6
Q
what does random error mean
A
7
Q
what does systametic error mean
A
8
Q
what does accuracy mean
A
9
Q
what does precision mean
A
10
Q
what is a vector quanity
A
11
Q
what is a scaler quanitty
A
12
Q
what is the formula for frequnecy
A
1/time period
s -1
13
Q
A
