Given-
Power, P = 800W
Thickness, L = 0.6cm
Area, A = 160cm²
Thermal conductivity, k = 60W/mK
The heat conduction would be

Except
all the values are 0.
Therefore,

Thus, the boundary conditions here would be
1. 
2. 
Answer:
D.All of the above
Explanation:
Properties of hydrogen:
1.It is lighter than air.It has density about 0.089 g/L.
2.Hydrogen rapidly change from liquid state to gas,so special protection is required to protect it.
3.It is highly flammable gas.
4.Liquid form of hydrogen exits at -432 F .This is very low temperature so special protection requires to keep it in liquid form.
Answer:
An arduino is just a micro controller. It has a programmable CPU and a memory storage. There're plenty of other microcontrollers out there that does the same thing like the NodeMCU or the Teensy 3. A quick google search should reveal alot more alternatives.
You can pretty much program the arduino using any language. The only thing is that had someone made a compiler to translate the code into the 1's and 0's that can be read by the arduino yet.
As for manufacturing, I think they use their own custom made controller. I haven't seen a company that used an arduino yet.
The answer & explanation for this question is given in the attachment below.
Answer:
h= 37.9 m
Explanation:
Given that
SG = 0.8 for fuel so density of fluid will be 800 kg/m³.
We know that SG = 13.6 For Hg so density will be 13600 kg/m³.
Now by balancing the pressure




h= 37.9 m