initial commit / add all books

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diff --git a/3850/CH25/EX25.1/Ex25_1.sce b/3850/CH25/EX25.1/Ex25_1.sce
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+
+//To calculate the kinetic energy

+

+//Example 25.1

+

+clear;

+

+clc;

+

+m=10;//mass in kg

+

+v=36;//speed in kmph

+

+E=[1/2*m*(v*10^3/3600)^2]/4.186;//formula for finding kinetic energy

+

+printf("kinetic energy=%f cal",E);

diff --git a/3850/CH25/EX25.1/Ex25_1.txt b/3850/CH25/EX25.1/Ex25_1.txt
new file mode 100644
index 000000000..3e5796823
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+
+ kinetic energy=119.445772 cal
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diff --git a/3850/CH25/EX25.2/Ex25_2.sce b/3850/CH25/EX25.2/Ex25_2.sce
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index 000000000..d04ca5118
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+++ b/3850/CH25/EX25.2/Ex25_2.sce
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+
+//To calculate the heat supplied to the block

+

+//Example 25.2

+

+clear;

+

+clc;

+

+m=60;//mass of a copper block in grams

+

+s=0.09;//specific heat capacity of copper in (cal/g-degree celsius)

+

+t=20;//temperature increased by degree celcius

+

+Q=m*s*t;//formula for finding the heat supplied to the block

+

+printf("Heat=%f cal",Q);

diff --git a/3850/CH25/EX25.2/Ex25_2.txt b/3850/CH25/EX25.2/Ex25_2.txt
new file mode 100644
index 000000000..f2e705e23
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+
+Heat=108.000000 cal
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diff --git a/3850/CH25/EX25.3/Ex25_3.txt b/3850/CH25/EX25.3/Ex25_3.txt
new file mode 100644
index 000000000..840a0c1dc
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+++ b/3850/CH25/EX25.3/Ex25_3.txt
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+
+ Mass of the Ice Melted=61.764706 gram
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diff --git a/3850/CH25/EX25.3/ex25_3.sce b/3850/CH25/EX25.3/ex25_3.sce
new file mode 100644
index 000000000..493878b69
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+//To calculate the mass of melted Ice

+//Example 25.3

+

+clear;

+

+clc;

+

+m=0.2;//mass of a piece of ice in kg at 25 degree Celsius

+

+s=4200;//specific heat capacity of water in J/kg-k

+

+t1=25;//Initial Temperature in Celsius

+

+t2=0;//Final Temperature in Celsius

+

+Q=m*s*(t1-t2);//formula for finding the heat

+

+L=3.4*10^5;//specific latent heat of fusion of ice in J/kg

+

+M=Q/L;//The amount of ice melted

+

+printf("Mass of the Ice Melted=%f gram",M*1000);

diff --git a/3850/CH25/EX25.4/Ex25_4.sce b/3850/CH25/EX25.4/Ex25_4.sce
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+
+//To calculate the Specific Latent Heat of vaporization of water

+

+//Example 25.4

+

+clear;

+

+clc;

+

+m=1.5;//Mass of steam condensed in grams

+

+s=1;//Specific Heat Capacity in cal/g-C

+

+t1=100;//Initial Temperature in degree Celsius

+

+t2=30;//Final Temperature in degree Celsius

+

+t=t1-t2;//Change in Temperature in degree Celsius

+

+Q2=m*s*t;//Heat lost in the process of cooling from 100 degree Celsius to 30 degree Celsius in calories

+

+We=15;//Wateer Equivalent of Calorimeter in grams

+

+Mw=165;//Mass of water in grams

+

+t3=25;//Initial Temperature in degree Celsius

+

+t4=30;//Final Temperature in degree Celsius

+

+T=t4-t3;//Change in temperature in degree Celsius

+

+Q3=(We+Mw)*s*T;//Heat supplied to raise the temperature from 25 degree Celsius to 30 degree Celsius in Calories

+

+L=(Q3-Q2)/m;//Specific Latent Heat of Vapourization of water

+

+printf("Specific Latent Heat of Vapourization of water=%f cal/g",L);

diff --git a/3850/CH25/EX25.4/Ex25_4.txt b/3850/CH25/EX25.4/Ex25_4.txt
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+
+ Specific Latent Heat of Vapourization of water=530.000000 cal/g
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