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Diffstat (limited to '2084/CH16/EX16.23w')
| -rwxr-xr-x | 2084/CH16/EX16.23w/16_23w.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/2084/CH16/EX16.23w/16_23w.sce b/2084/CH16/EX16.23w/16_23w.sce new file mode 100755 index 000000000..56b885d16 --- /dev/null +++ b/2084/CH16/EX16.23w/16_23w.sce @@ -0,0 +1,18 @@ +//developed in windows XP operating system 32bit
+//platform Scilab 5.4.1
+clc;clear;
+//example 16.23w
+//calculation of the frequency of train whistle heard by the person standing on the road perpendicular to the track
+
+//given data
+v=340//speed(in m/s) of the sound in the air
+d1=300//distance(in m) of the train from the crossing
+u=120*10^3/(60*60)//speed(in m/s) of the train
+nu=640//frequency(in Hz) of the whistle
+d2=400//distance(in m) of the person from the crossing ,perpendicular to the track
+
+//calculation
+theta=acosd(d1/sqrt(d1^2+d2^2))//pythagoras theorem
+nudash=(v/(v-(u*cosd(theta))))*nu//frequency of the whistle heard
+
+printf('the frequency of train whistle heard by the person standing on the road perpendicular to the track is %d Hz',nudash)
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