no, pi is a unitless numerical constant
Pi is unitless as far as I am aware. however pi = 3.1415926 as far as I remember, but 3.14 in most cases is all that's necessary. Only when you multiply by centimetres squared (r2) for example does the answer get units of cm2.
The Beer-Lambert Law:A = epsilon*b*cA is absorbance (unitless)epsilon is the extinction coefficient at a particular wavelength (L cm-1 mol-1)b is the path length of the cuvette (cm)c is the concentration of the solution (mol/L)
capillary number(Ca)=(viscosity*velocity)/surface tension viscosity have the unit (kg/(meter*time)) same for velocity(meter/time) and surface tension ((kg*meter)/(time2*meter)) so= (kg *meter*time*time*meter)/(meter*time*time*kg*meter) = unitless dimension={M0 L0 T0}
a meaning
Yes
IMA and AMA are unitless
A ratio.
it's an unitless quantity.......
it's an unitless quantity.......
unitless
it is a unitless number because it is the ratio of speed divided by speed. in other words m/sec divided by m/sec. the units cancel leaving just a unitless number.
The unit of measurement for air pollution is AQI (air quality index)Answer:Units used include (may or may not be rolled up into a unitless AQI):COH - Coefficient of Hazeopacity (%) for smoke emissionsppm (parts per million)ppb (parts per billion)odor index (unitless)soiling index (unitless)sulfation rates (gm/m2)dustfall in gm/m2
Since trig functions are no more than ratios between the sides, it is unitless.
coefficient
4.5 m /0.1 m = 45 (unitless)
(.7 * 1) g / 428 g = 0.0016355140 (Unitless)