Most of our knowledge about Earth's interior comes from Seismic waves. Thus, option C is correct.
<h3>What is seismic waves</h3>
Seismic waves are created by abrupt movement of elements within the Earth, including fault rupture during an earthquake. Seismic waves can be caused by volcanic eruptions, blasts, landslides, rock slides, and even flowing rivers.
Seismic waves, also known as compressional or longitudinal waves, push and pull the earth in the direction of motion. Seismic waves provide the majority of our information about the Earth's innards. As a result, option C is correct.
Learn more about Seismic waves here:
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Answer:
From the question, we have two variables
1. userNum1
2. userNum2
And we are to print "userNum1 is negative" if userNum1 is less than 0.
Then Assign userNum2 with 2 if userNum2 is greater than 10.
Otherwise, print "userNum2 is less or equal 10.".
// Program is written in C++ Programming Language
// Comments are used for explanatory purpose
// Program starts here
#include<iostream>
using namespace std;
int main ()
{
// Declare variables
int userNum1, userNum2;
// Accept input for these variables
cin>>userNum1, userNum2;
// Condition 1
if(userNum1 < 0)
{
cout<<"userNum1 is negative"<<'\n';
}
// Condition 2
if(userNum2 > 10)
{
userNum2 = 2;
}
// If condition is less than 10
else
{
cout<<"userNum2 is less or equal to 10"<<\n;
}
return 0;
}
// End of Program.
Solution :
The isentropic efficiency of the turbine is given as :
The entropy relation for the isentropic process is given by :
Now obtaining the properties from the ideal gas properties of air table :
At 
Calculating the relative pressure at state 2s :
Obtaining the properties from Ideal gas properties of air table :
At , 
Considering the isentropic relation to calculate the actual temperature at the turbine exit, we get:
So, at , 
Now calculating the work developed per kg of air is :
= 1757.57 - 975.66
= 781 kJ/kg
Therefore, the temperature at the exit is 938 K and work developed is 781 kJ/kg.
Answer:
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