Convective drying of nonporous biological solids a 3 mm bed of wet nonporous biological solids was dried in a tray by blowing air with 20% moisture across the top of the bed at 70°c and atmospheric pressure. the data in table p10.5 were obtained for the drying of these solids: table p10.5 xn mass water mass dry solids t (min) 20 30 40 50 60 70 80 90 100 120 140 160 0.190 0.176 0.153 0.130 0.107 0.084 0.064 0.050 0.039 0.031 0.026 0.018 0.014 0.012 from the drying data, estimate the diffusion coeffi cient of water in the biological material and the heat transfer coefficient for the convective heat transfer. the wet material has a bulk density of 1.1 g/cm

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .

football

explanation:

because it is

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.