initial commit / add all books

13 files changed, 134 insertions, 0 deletions

diff --git a/3845/CH7/EX7.1/Ex7_1.sce b/3845/CH7/EX7.1/Ex7_1.sce
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+//Example 7.1

+F=75;//Force (N)

+d=25;//Horizontal distance traversed (m)

+theta=35;//Angle (deg)

+W=F*d*cosd(theta);//Work (J)

+W1=W/4184;//Work (kcal)

+printf('Work done = %0.2e J or %0.3f kcal',W,W1)

+ratio=W1/2400;//Ratio of work done to the daily consumption

+printf('\nRatio of work done to the daily consumption = %0.2e',ratio)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.10/Ex7_10.sce b/3845/CH7/EX7.10/Ex7_10.sce
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+//Example 7.10

+m=65;//Mass of player (kg)

+v_i=6;//Initial velocity (m/s)

+f=450;//Force of friction (N)

+theta=5;//Angle of incline (deg)

+d=(1/2*m*v_i^2)/(f+m*g*sind(theta));//Distance slid (m)

+printf('Distance slid = %0.2f m',d)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.11/Ex7_11.sce b/3845/CH7/EX7.11/Ex7_11.sce
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+//Example 7.11

+m=60;//Mass of the woman (kg)

+v_f=2;//Final speed (m/s)

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

+h=3;//Height (m)

+t=3.50;//Time taken (s)

+P=[(1/2*m*v_f^2)+(m*g*h)]/t;//Power (W)

+printf('Power output = %0.1f W',P)

+//Answer varies due to round off error

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.12/Ex7_12.sce b/3845/CH7/EX7.12/Ex7_12.sce
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+//Example 7.12

+P=0.200;//Power rating (kW)

+t=6*30;//Duration of use; 6hours per day*30days (h)

+E=P*t;//Energy consumed (kWh)

+cost=E*0.120;//Cost per month, if cost of electricity is $0.120/kWh

+printf('Cost of running the computer for the given duration = $%0.2f per month',cost)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.13/Ex7_13.sce b/3845/CH7/EX7.13/Ex7_13.sce
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index 000000000..d9b5906c4
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+//Example 7.13

+Energy=1000;//Energy (kJ)

+E_by_time=400;//Rate of energy consumption (W)

+Time=Energy*10^3/E_by_time;//Time (s)

+printf('Duration of bicycling required per day = %0.1f min',Time/60)

+//Discussion

+Fat_loss=Energy*1/39;//Fat loss if energy content of fat is assumed to be 39kJ/g (g)

+printf('\nDiscussion:\nFat loss = %0.1f g',Fat_loss)

+//Answers vary due to round off error 

+//Openstax - College Physics

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

+

diff --git a/3845/CH7/EX7.2/Ex7_2.sce b/3845/CH7/EX7.2/Ex7_2.sce
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index 000000000..b435b3a7d
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+//Example 7.2

+m=30;//Mass (kg)

+v=0.500;//Speed (m/s)

+KE=(1/2)*m*v^2;//Kinetic energy (J)

+printf('Kinetic energy = %0.2f J',KE)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.3/Ex7_3.sce b/3845/CH7/EX7.3/Ex7_3.sce
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+//Example 7.3

+F_app=120;//Applied force (N)

+F_fr=5;//Opposing friction force(N)

+d=0.800;//Distance traversed (m)

+F_net=F_app-F_fr;//Net force (N)

+W_net=F_net*d;//Net work (J)

+printf('a.Net work done on the package = %0.1f J',W_net)

+W_app=F_app*d*cosd(0);//Work done due to applied force in direction of displacement (J)

+W_fr=F_fr*d*cosd(180);//Work done due to friction force acting in a direction opposite to that of displacement (J)

+W_gr=0;//Work done by gravity is zero as force due to gravity acts perpendicular to displacement, cosd(270)=0, (J)

+W_N=0;//Work done by the normal force is zero as it acts perpendicular to displacement, cosd(90)=0, (J)

+W_total=W_gr+W_N+W_app+W_fr;//Total work done (J)

+printf('\nb.Total work done as sum of work done by each force = %0.1f J',W_total)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.4/Ex7_4.sce b/3845/CH7/EX7.4/Ex7_4.sce
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+//Example 7.4

+W_net=92;//Net work done on the package (J), See Example 7.3

+v_0=0.5;//Initial speed (m/s), See Example 7.2

+m=30;//Mass (kg), See Example 7.2

+v=sqrt((W_net+1/2*m*v_0^2)*2/m);//Final speed, by rearranging Equation 7.22, (m/s) 

+printf('Final Speed = %0.2f m/s',v)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.5/Ex7_5.sce b/3845/CH7/EX7.5/Ex7_5.sce
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+//Example 7.5

+f=5;//Friction force (N), See Example 7.3

+initial_KE=3.75;//Initial kinetic energy (J), See Example 7.2

+W_net=92;//Net work done on the package (J), See Example 7.3

+//This is equal to the energy acquired due to the pushing

+W_fr=-(initial_KE+W_net);//Work by friction (J)

+theta=180;//Direction of friction force (opposite to displacement)(deg)

+d_prime=W_fr/(f*cosd(theta))

+printf('Distance to stop = %0.1f m',d_prime)

+//Answer varies due to round off error

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.6/Ex7_6.sce b/3845/CH7/EX7.6/Ex7_6.sce
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+//Example 7.6

+m=60;//Mass of the person (kg)

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

+h=3;//Height (m)

+theta=180;//Angle (deg)

+d=0.5*10^-2;//Magnitude of compression in knee joint (m)

+W=m*g*(-h);//Work done in stopping the person (J)

+F=W/(d*cosd(theta));//Force on the knee joints (N)

+printf('Force on the knee joints = %0.2e N',F)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.7/Ex7_7.sce b/3845/CH7/EX7.7/Ex7_7.sce
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index 000000000..4cdf08a5b
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+//Example 7.7

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

+h=20;//Magnitude of height (m)

+v_a=sqrt(2*g*h);//Final speed (m/s)

+printf('a.Final speed = %0.1f m/s',v_a)

+v_0=5;//Initial speed (m/s)

+v_b=sqrt(2*g*h +v_0^2);//Final speed (m/s)

+printf('\nb.Final speed = %0.1f m/s',v_b)

+//Openstax - College Physics

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

+

diff --git a/3845/CH7/EX7.8/Ex7_8.sce b/3845/CH7/EX7.8/Ex7_8.sce
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+//Example 7.8

+k=250;//Force constant of spring (N/m)

+m=0.100;//Mass of car (kg)

+x_i=0.0400;//Initial compression of the sping (m)

+v_f_a=sqrt(k/m)*x_i;//Final velocity (m/s)

+printf('a.Final speed (before the start of the slope) = %0.2f m/s',v_f_a)

+h_f=0.180;//Final height (m)

+v_f_b=sqrt((k*x_i^2/m)-(2*g*h_f));//Final velocity (m/s)

+printf('\nb.Final speed (at the top of the slope) = %0.3f m/s',v_f_b)

+//Openstax - College Physics

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

diff --git a/3845/CH7/EX7.9/Ex7_9.sce b/3845/CH7/EX7.9/Ex7_9.sce
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+//Example 7.9

+m=65;//Mass of player (kg)

+v_i=6;//Initial velocity (m/s)

+f=450;//Force of friction (N)

+d=m*v_i^2/(2*f);//Distance slid (m)

+printf('Distance slid = %0.2f m',d)

+//Openstax - College Physics

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