Fundamental Concepts Flashcards
what is the SI for metre
m
SI for kilogram
kg
SI for second
s
SI for ampere and what is it
A - electric current
SI for Kelvin and used for what
K - tempature
SI for mole and what is it
mol - amount of substance
SI for candela and what is it
cd - light intensity
prefix for 1000
kilo
prefix for 1
none
prefix for 0.01
centi
prefix for 0.001
milli
what type of unit and represented by what is length
bass
-metre (m)
what type of unit and represented by what is is area
derived
-sqaure meter (m2)
what type of unit and represented by what is linear velocity
derived
-metre per second (m/s)
what type of unit and represented by what is mass
bass
-kilogram (kg)
what type of unit and represented by what is force
derived
-newton (N (kg*m/s2)
what type of unit and represented by what is time
bass
-second (s)
what type of unit and represented by what is moment of force
derived
-newton metre (N*m)
what makes a derived unit
2 bass units together
what is the significant digits slide rule
limit our answers to 3 significant digits
-unless the first digit is a 1
-then 4 significant digits
what is the menaing behind the significant figures
digits that carry meaning contributing to its measurement precision
what are the 5 rules of significant digits
- all non-zero figures are significant
- zeroes between non-zero figures are significant
- leading zeroes are never significant
- in a number with a decimal point, trailing zeroes are significant
- in a number without a decimal point, trailing zeroes are not significant
what are the 3 bass units of measure and why
space, mass, time
-form foundation upon which other mechanical dimensions can be derived
-quantities are assumed to be independent
volume is measured in what 2 ways
m3
or
L(1m3=1000L)
any position in space can be defined by what 3 things
3 coordinates representing 3 lengths along 3 axes (x, y, and z)