What is the external surface temperature (in oC) for a heat flux of 515 W/m2 through a 11 centimeter thick layer of a solid that has a thermal conductivity of 20.9 W/m-K when the inner temperature is 22.2 oC.

Iwannasay c is the most accurate

The purpose of a lab is to do your "expirements" the importance of the topic is so you can now what the story is about and the last one is because no one is me with my question ( what is 3 over 4 x - 9 = 27 maybe you can )

  concave means having an outline or surface that curves inward like the interior of a circle or sphere. so the mirror curves inward.

+10 that is always the common denominator