initial commit / add all books

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diff --git a/3845/CH14/EX14.1/Ex14_1.sce b/3845/CH14/EX14.1/Ex14_1.sce
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+//Example 14.1

+T_f=80;//Final temperature (C)

+T_i=20;//Initial temperature (C)

+delta_T=T_f-T_i;//Temperature change (C)

+rho=1000;//Density of water (kg/m^3)

+V=0.250;//Volume (L)

+V=V*10^-3;//Volume (m^3)

+m_W=rho*V;//Mass of water (kg)

+c_W=4186;//Specific heat of water (J/kg.C), See Table 14.1

+Q_W=m_W*c_W*delta_T/1000;//Heat required by water(kJ)

+printf('a.Heat required by water= %0.1f kJ',Q_W)

+m_Al=0.5;//Mass of aluminum (kg)

+c_Al=900;//Specific heat of aluminum (J/kg.C), See Table 14.1

+Q_Al=m_Al*c_Al*delta_T/1000;//Heat required by aluminum (kJ)

+printf('\n  Heat required by pan = %0.1f kJ',Q_Al)

+Q_total=Q_W+Q_Al;//Total heat transferred (kJ)

+printf('\n  Total Heat required = %0.1f kJ',Q_total)

+printf('\nb.Percentage of heat used to heat the pan = %0.1f%%',Q_Al/Q_total*100)

+printf('\nc.Percentage of heat used to heat the water = %0.1f%%',Q_W/Q_total*100)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

+

diff --git a/3845/CH14/EX14.2/Ex14_2.sce b/3845/CH14/EX14.2/Ex14_2.sce
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+//Example 14.2

+M=10000;//Mass of truck (kg)

+g=9.80;//Acceleration due to gravity (m/s^2)

+h=75;//Vertical displacement (m)

+delta_PE=M*g*h;//Change in gravitational potential energy (J)

+Q=delta_PE;//Heat transferred (J)

+m=100;//Mass of brake material (kg)

+c=800;//Specific heat of brake material (J/kg.C)

+delta_T=Q/(m*c);//Temperature increase (C)

+printf('Temperature increase of brake material = %0.2f C',delta_T)

+//Answer varies due to round off error 

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.3/Ex14_3.sce b/3845/CH14/EX14.3/Ex14_3.sce
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+//Example 14.3

+m_Al=0.5;//Mass of aluminum pan (kg)

+c_Al=900;//Specific heat of aluminum (J/kg.C)

+T_Al=150;//Initial temperature of pan (C)

+m_W=0.25;//Mass of water (kg)

+c_W=4186;//Specific heat of water (J/kg.C)

+T_W=20;//Initial temperature of water (C)

+T_f=[(m_Al*c_Al*T_Al)+(m_W*c_W*T_W)]/(m_Al*c_Al+m_W*c_W);//Final temperature, See Equation 14.15 (C)

+printf('Final temperature = %0.1f C',T_f)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.4/Ex14_4.sce b/3845/CH14/EX14.4/Ex14_4.sce
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+//Example 14.4

+m_ice=3*6;//Mass of ice cubes (g)

+m_ice=m_ice/1000;//Mass of ice cubes (kg)

+L_f=334000;//Latent heat of fusion of water (J/kg)

+c_W=4186;//Specific heat of water (and soda) (J/kg.C)

+T_ice=0;//Initial temperature of ice cubes (C)

+m_soda=0.25;//Mass of soda (kg)

+T_soda=20;//Initial temperature of soda (C)

+T_f=[(m_soda*c_W*T_soda)-(m_ice*L_f)]/[(m_soda+m_ice)*c_W];//Final temperature after derivation (C)

+printf('Final temperature = %0.2f C',T_f)

+//An error of more than 2% due to round off error  

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.5/Ex14_5.sce b/3845/CH14/EX14.5/Ex14_5.sce
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+//Example 14.5

+A=0.950;//Area (m^2)

+d=2.5*10^-2;//Thickness (m)

+T1=0;//Temperature inside the box (C)

+T2=35;//Temperature outside the box (C)

+t=24*60*60;//Time, convert 1 day to seconds (s)

+k=0.010;//Thermal conductivity of styrofoam (J/s.m.C)

+rate=[k*A*(T2-T1)]/d;//Rate of conductive heat transfer (J/s)

+Q=rate*t;//Heat energy transferred (J)

+L_f=334*10^3;//Latent heat of fusion of water (J/kg)

+m=Q/L_f;//Mass of ice melted (kg)

+printf('Amount of ice that melts in one day = %0.2f kg',m)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.6/Ex14_6.sce b/3845/CH14/EX14.6/Ex14_6.sce
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+//Example 14.6

+d=0.8*10^-2;//Thickness of pan bottom (m)

+r=(14/2)*10^-2;//Radius of pan (m)

+A=%pi*r^2;//Area of pan bottom (m^2)

+k=220;//Thermal conductivity of aluminum (J/s.m.C)

+m=1*10^-3;//Mass of water (kg)

+L_v=2256*10^3;//Latent heat of vaporization (J/kg)

+Q=m*L_v;//Heat of vaporization of 1g of water (J)

+rate=Q/1;//Rate of heat transfer,Q/t, (J/s)

+delta_T=rate*d/(k*A);//Temperature difference (C)

+printf('Temperature difference across the bottom of the pan = %0.2f C',delta_T)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.7/Ex14_7.sce b/3845/CH14/EX14.7/Ex14_7.sce
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+//Example 14.7

+rho=1.29;//Density of air (kg/m^3)

+V=12*18*3;//Volume (m^3)

+m=rho*V;//Mass of air (kg)

+c=1000;//Specific heat of air (J/kg.C), See Table 14.4

+delta_T=10;//Change in temperature (C)

+Q=m*c*delta_T;//Heat transferred (J)

+t=30*60;//Time,minutes converted to seconds,(s)

+rate=Q/t;//Heat transfer rate(W)

+printf('Rate of heat transfer = %0.2f kW',rate/1000)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

diff --git a/3845/CH14/EX14.8/Ex14_8.sce b/3845/CH14/EX14.8/Ex14_8.sce
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+//Example 14.8

+rate_heat=120;//Rate of production of heat, Q/t, (W) or (J/s)

+L_v=2430;//Latent heat of vaporization (kJ/kg) or (J/g), See Table 14.2

+rate_mass=rate_heat/L_v;//Rate at which water must evaporate (g/s)

+rate_mass=rate_mass*60;//Rate at which water must evaporate (g/min)

+printf('Water must evaporate at a rate = %0.2f g/min',rate_mass)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest

+

diff --git a/3845/CH14/EX14.9/Ex14_9.sce b/3845/CH14/EX14.9/Ex14_9.sce
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+//Example 14.9

+T1=33;//Person's temperature (C)

+T1=T1+273;//Person's temperature (K)

+T2=22;//Ambient temperature of room (C)

+T2=T2+273;//Ambient temperature of room (K)

+A=1.50;//Surface area of skin (m^2)

+e=0.97;//Emissivity 

+sigma=5.67*10^-8;//Stefan-Boltzmann constant (J/s.m^2.K^4)

+rate=sigma*e*A*(T2^4-T1^4);//Rate of radiative heat transfer (J/s)

+printf('Rate of radiative heat transfer = %0.2f W',rate)

+//The answer varies due to round off error

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest