1 files changed, 24 insertions, 0 deletions
diff --git a/3769/CH5/EX5.7/Ex5_7.sce b/3769/CH5/EX5.7/Ex5_7.sce
new file mode 100644
index 000000000..d9dc32885
--- /dev/null
+++ b/3769/CH5/EX5.7/Ex5_7.sce
@@ -0,0 +1,24 @@
+clear
+//Given
+a=6.023*10**23
+m=63.5*10**-3
+d=9*10**3
+A=10**-7                   //m**2
+e=1.6*10**-19                   //C
+I=1.5                           //a
+K=1.38*10**-23                 //J/K
+T=300                           //K
+Vd=1.1*10**-3
+C=3*10**8
+
+//Calculation
+//
+n=a*d/m
+Vd=I/(n*A*e)
+V=sqrt((3*K*T*a)/m)
+V1=Vd/V
+E=Vd/C
+
+//Result
+printf("\n (i) Thermal speeds of copper atoms at ordinary temperatures are  %0.2f  *10**-6 m/s",V1*10**6)
+printf("\n (ii) Speed of propagation of electric fild is  %0.1f *10**-12 ",E*10**12)