When a piano tuner strikes both the A on the piano and a 440 Hz tuning fork, he hears a beat every 2 seconds. The frequency of t
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Answer:
The work and heat transfer for this process is = 270.588 kJ
Explanation:
Take properties of air from an ideal gas table. R = 0.287 kJ/kg-k
The Pressure-Volume relation is <em>PV</em> = <em>C</em>
<em>T = C </em> for isothermal process
Calculating for the work done in isothermal process
<em>W</em> = <em>P</em>₁<em>V</em>₁
= <em>mRT</em>₁ [∵<em>pV</em> = <em>mRT</em>]
= (5) (0.287) (272.039)
= 270.588 kJ
Since the process is isothermal, Internal energy change is zero
Δ<em>U</em> =
From 1st law of thermodynamics
Q = Δ<em>U </em>+ <em>W</em>
= 0 + 270.588
= 270.588 kJ
Answer:
Explanation:
First step
To calculate by how much the pressure has been increased we must find a relation between Vrms and the pressure p
Where M is molar mass,R is gas constant and T is temperature
As R and M is constant so we obtain
Vrams∝√T
Second step
From Ideal gas law we know that
we will find that
p∝T
So from first and second step, we can obtain that
Vrms∝√p
And a relation between both of them could be given by:
The pressure is increased to 4.1988 atm, so the amount will be given by: