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Diffstat (limited to '3845/CH17/EX17.8/Ex17_8.sce')
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1 files changed, 16 insertions, 0 deletions
diff --git a/3845/CH17/EX17.8/Ex17_8.sce b/3845/CH17/EX17.8/Ex17_8.sce new file mode 100644 index 000000000..74bb8e3da --- /dev/null +++ b/3845/CH17/EX17.8/Ex17_8.sce @@ -0,0 +1,16 @@ +//Example 17.8
+f_s=2500000;//Frequency of ultrasound (Hz)
+v_w=1540;//Speed of sound in human tissue (m/s)
+v_obs=20*10^-2;//Speed of blood (m/s)
+f_obs=f_s*((v_w+v_obs)/v_w);//Frequency received by the blood (Hz)
+printf('a.Frequency received by the blood = %7.0f Hz',f_obs)
+v_b=v_obs;//Source velocity=velocity of blood (m/s)
+f_obs=f_obs*(v_w/(v_w-v_b));//Frequency that returns to source (Hz)
+printf('\nb.Frequency that returns to source = %7.0f Hz',f_obs)
+f_B=abs(f_obs-f_s);//Beat frequency (Hz)
+printf('\nc.Beat frequency produced = %0.2f Hz',f_B)
+//Answer given in the textbook is wrong for (a)
+//Answer varies for (c) due to round off error
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest
+
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