Ind the net rate of heat transfer by radiation from a skier standing in the shade, given the following. she is completely clothed in white (head to foot, including a ski mask), the clothes have an emissivity of 0.200 and a surface temperature of 10.0ºc , the surroundings are at −15.0ºc , and her surface area is 1.60 m^2 . (answer in w)

Q=116.37 W

Explanation:

Given that

Emissivity ,ε= 0.200

Surface temperature ,T₁ = 10⁰ C = 283 K

Surrounding T₂ = - 15⁰ C = 258 K

Area ,A= 1.6 m²

The net heat transfer given as

σ = 5.67 x 10⁻⁸

The temperature should be in Kelvin.

Now by putting the values

Q=116.37 W

Therefore answer will be 116.37 W.

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

well clustered together.

points close on a scatter diagram