(Q5] (a) A 2.5 g of ideal gas at state a has a volume of 0.01 m3 and temperature of 30 C, It undergoes the following processes Fram state a to state b volume increases adiabaticaly to 0.032 m3. Fram state b to state cit expands isothermally to 0.04 m3. From state c to state d it compressed to 0.02 m3 Of a process PV1.2econst. I- Find total work done. Il- When a heat of 250J is added to system, what is the change in internal energy.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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(Q5] (a) A 2.5 g of ideal gas at state a has a volume of 0.01 m3
and temperature of 30 C, It undergoes the following processes
From state a
to state b volume increases adiabatically to 0.032 m3.
From state b to state c it expands isothermally to 0.04 m3.
From state c to state d it compressed to 0.02 m3 Of a process PV1.2-const.
1- Find total work done. Il- When a heat of 250J is added to system, what is
the change in internal energy.
(b) A car is travelling in a circular path of radius R with a velocity vo. It
starts to break with a deceleration of
a = c1+k1 v
where c1 and kl are constants. Find
I-
Breaking time (tbr),(time taken to stop car)
Il-
Breaking distance (sbr),( distance travelled until car is stopped.
II- Relation of normal acceleration with time.
All result is to be found in terms of (vo,c1 and k1).
Transcribed Image Text:(Q5] (a) A 2.5 g of ideal gas at state a has a volume of 0.01 m3 and temperature of 30 C, It undergoes the following processes From state a to state b volume increases adiabatically to 0.032 m3. From state b to state c it expands isothermally to 0.04 m3. From state c to state d it compressed to 0.02 m3 Of a process PV1.2-const. 1- Find total work done. Il- When a heat of 250J is added to system, what is the change in internal energy. (b) A car is travelling in a circular path of radius R with a velocity vo. It starts to break with a deceleration of a = c1+k1 v where c1 and kl are constants. Find I- Breaking time (tbr),(time taken to stop car) Il- Breaking distance (sbr),( distance travelled until car is stopped. II- Relation of normal acceleration with time. All result is to be found in terms of (vo,c1 and k1).
Expert Solution
Step 1

As both questions are not related and it is not mentioned which to be solved, hence Solving first question.

A) 

Given 

m = 2.5 g = 0.0025 kg

v = 0.01 m3 

T = 30°C = 303 K

For ideal gas,

R = 0.287KJ/kg , gamma = 1.4

Process a-b = adiabatic expansion 

Process b-c = isothermal expansion

Process c-d = polytropic compression(n = 1.25)

 

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