The convection heat transfer coefficient for a clothed person standing in moving air is expressed as h = 14.8v0.69 for 0.15 < v < 1.5 m/s, where v is the air velocity. for a person with a body surface area of 1.7 m2 and an average surface temperature of 29°c, determine the rate of heat loss from the person in windy air at 10°c by convection for air velocity of 0.9 m/s. (round the final answer to one decimal place.)

answer: what are you talking about?

explanation:

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.