471_PartUniversity Physics Solution

471_PartUniversity Physics Solution - 15-8Chapter 15...

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Unformatted text preview: 15-8Chapter 15 15.26.IDENTIFY:The distance the wave shape travels in time tis vt. The wave pulse reflects at the end of the string, at point O. SET UP:The reflected pulse is inverted when Ois a fixed end and is not inverted when Ois a free end. EXECUTE:(a)The wave form for the given times, respectively, is shown in Figure 15.26a. (b)The wave form for the given times, respectively, is shown in Figure 15.26b. EVALUATE:For the fixed end the result of the reflection is an inverted pulse traveling to the left and for the free end the result is an upright pulse traveling to the left. Figure 15.26 15.27.IDENTIFY:The distance the wave shape travels in time tis vt. The wave pulse reflects at the end of the string, at point O. SET UP:The reflected pulse is inverted when Ois a fixed end and is not inverted when Ois a free end. EXECUTE:(a)The wave form for the given times, respectively, is shown in Figure 15.27a. (b)The wave form for the given times, respectively, is shown in Figure 15.27b. EVALUATE:For the fixed end the result of the reflection is an inverted pulse traveling to the left and for the free end the result is an upright pulse traveling to the left. Figure 15.27 15.28. IDENTIFY:Apply the principle of superposition. SET UP:The net displacement is the algebraic sum of the displacements due to each pulse. EXECUTE:The shape of the string at each specified time is shown in Figure 15.28. EVALUATE:The pulses interfere when they overlap but resume their original shape after they have completely passed through each other. Figure 15.28 15.29.IDENTIFY:Apply the principle of superposition. SET UP:The net displacement is the algebraic sum of the displacements due to each pulse. EXECUTE:The shape of the string at each specified time is shown in Figure 15.29. Mechanical Waves 15-9 EVALUATE:The pulses interfere when they overlap but resume their original shape after they have completely passed through each other. Figure 15.29 15-10Chapter 15 15.30.IDENTIFY:Apply the principle of superposition....
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471_PartUniversity Physics Solution - 15-8Chapter 15...

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