Measurement of heat conductivity a metal panel of area a = 100 cm² and thickness y = 0.5 cm was found to conduct heat at a rate of 3 w at steady state with temperatures to = 25 °c and t, = 30 °c imposed on the two main surfaces. what is the average thermal conductivity of the material at this temperature range?

The average thermal conductivity of the material at this temperature range is 3*10^(-9) W/mK.

Explanation:

The heat flow through this area of the metal panel can be expressed as:

being A the surface area, k the thermal conductivity, T2 and T1 the temperatures in each side and Y the thickness of the metal panel.

We have to rearrange the equation to clear k:

The average thermal conductivity of the material at this temperature range is 3*10^(-9) W/mK.

it can be icreased by increasing pressure.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.