initial commit / add all books

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diff --git a/2243/CH13/EX13.5/Ex13_5.sce b/2243/CH13/EX13.5/Ex13_5.sce
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+clc();

+clear;

+//Given :

+u = 5*10^5; //horizontal velocity in m/s

+alpha = 35; // in degrees

+E = 200 ;// Electric field in V/m

+e = 1.6*10^-19; // electron charge in C

+m = 9.12*10^-31; // electron mass in kg

+a = (-e*E)/m; // horizontal range in m/s^2

+//(a);

+z_max = (-(u^2)*(sind(alpha))^2)/(2*a); // maximum penetration in m

+//(b)

+T = (-2*u*sind(alpha))/a; // Time of flight in s

+//(c)

+H = (-(u^2)*(sind(2*alpha)))/a; // horizontal range in m

+printf("z_max = %.1f mm \n",z_max*10^3);

+printf("T = %.2f x 10^-8 s  \n",T*10^8);

+printf("H = %.1f  mm",H*10^3);