Answer:
451 kj/kg
Explanation:
Velocity = 139m/s
Temperature = 70⁰C
T = 343K
M1 = v/√prt
= 130/√1.4x287x343
= 130/√137817.4
= 130/371.2
= 0.350
T1/To1 = 0.9760
From here we cross multiply and then make To1 the subject of the formula
To1 = T1/0.9760
To1 = 343/0.9760
To1 = 351.43
Then we go to the rayleigh table
At m = 0.35
To1/To* = 0.4389
To* = 351.43/0.4389
= 800k
M2 = 1
Maximum amount of heat
1.005(800-351.43)
= 450.8kj/kg
= 452kj/kg
Answer:
if they have the right equipment
Explanation:
Fossil fuels when burned let out toxins and pollution in the air. Because of that scientists and engineers work together to find ways to not be so dependent on fossil fuels so we are not polluting our air.
