initial commit / add all books

2 files changed, 19 insertions, 0 deletions

diff --git a/51/CH11/EX11.4/11_4.sce b/51/CH11/EX11.4/11_4.sce
new file mode 100755
index 000000000..96c7ce83d
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+++ b/51/CH11/EX11.4/11_4.sce
@@ -0,0 +1,19 @@
+clc;

+clear;

+z=1000;//m

+Ma=1.5;

+T=20;//degree C

+//alpha=atan(z/x), x=V*t,and Ma=(1/sin(alpha)); where alpha is the angle of the Mach cone

+//V=Ma*c

+c=343.3;//m/s found from the value of temperature

+V=Ma*c;//m/sec

+t=z/(Ma*c*tan(asin(1/Ma)));//sec

+disp("sec",t,"The number of seconds to wait after the plane passes over-head before it is heard=")

+Mach=0.01:0.01:4;

+count=1;

+for i=0.01:0.01:4

+    time(count)=z/(i*c*tan(asin(1/i)));

+    count=count+1;

+end

+plot2d(Mach,time,rect=[0,0,4,3])

+xtitle("t vs Ma","Ma","t, sec")

diff --git a/51/CH11/EX11.4/11_4graph.jpg b/51/CH11/EX11.4/11_4graph.jpg
new file mode 100755
index 000000000..86254ad74
--- /dev/null
+++ b/51/CH11/EX11.4/11_4graph.jpg