Measurement Flashcards
1
Q
SI unit for density
A
kg m^-3
2
Q
SI unit for frequency
A
s^-1
3
Q
SI unit for force
A
kg m s^-2
4
Q
SI unit for pressure
A
kg m^-1 s^-2
5
Q
SI unit for velocity
A
m s^-1
5
Q
SI unit for acceleration
A
m s^-2
6
Q
avocado number
A
6.02x10^23
7
Q
what is a homogenous eqn
A
LHS and RHS shld have same combi of base units
8
Q
define systematic and random error
A
systematic - occurs according to fixed rule, thus constant over/under estimation of true value is yielded
random - occurs w/o fixed pattern such that measurements done under same conditions have equally likely chance of being above/below true value
9
Q
define accuracy and precision
A
accuracy - how closely measured values agrees w the true value
precision - how closely measurements agree w each other
