波動現象的物理特性與駐波分析

📝 歷屆考古題

• 115年 hce_kmu 第7題
  Because the ear is sensitive over a broad range of intensities, a logarithmic measure of intensity c…
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• 115年 hce_kmu 第8題
  If a simple pendulum oscillates with small amplitude and its length is doubled, what happens to the…
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• 115年 hce_kmu 第37題
  During a liver ultrasound scan, the transducer operates at frequency f = 5.0 MHz. The sound speed in…
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• 115年 hce_kmu 第38題
  The deformation and the restoring force of an elastic string obey Hooke's law. When the string is st…
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• 115年 hce_kmu 第39題
  A supersonic jet fighter flies horizontally at a constant altitude of 3400 m with a speed of Mach 1.…
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• 114年 hce_kmu 第2題
  A particle moves in simple harmonic motion according to $x = 2\sin(15t)$, where x is in meters and t…
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• 114年 hce_kmu 第12題
  A wave has an angular frequency of 110 rad/s and a wavelength of 1.8 m. Calculate the angular wave n…
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• 114年 hce_kmu 第13題
  A transverse wave traveling along a string transports energy at a rate $r$. If we want to double thi…
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• 114年 hce_kmu 第14題
  A 2.0 m string is fixed at both ends and tightened until the wave speed is 80 m/s. What is the frequ…
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• 114年 hce_kmu 第31題
  A 0.25 kg block oscillates on the end of the spring with a spring constant of 133.3 N/m. If the syst…
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• 114年 hce_kmu 第32題
  In designing buildings to be erected in an area prone to earthquakes, what relationship should the d…
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• 114年 hce_kmu 第33題
  A 2 kg object is attached to an ideal massless horizontal spring of spring constant 100.0 N/m and is…
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• 114年 hce_kmu 第39題
  The howler monkey is the loudest land animal and, under some circumstances, can be heard up to a dis…
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• 114年 hce_kmu 第41題
  The human ear canal is, on average, 2.5 cm long. It is open to the outside and is closed at the othe…
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• 114年 hce_kmu 第46題
  Sound pressure level is defined as $\text{SPL(dB)} = 20 \log_{10}(P/P_0)$, where P is sound wave pre…
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• 114年 hce_kmu 第54題
  An observer on the Earth measures the speed of spacecraft A to be $0.50c$ and the speed of spacecraf…
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• 113年 hce_kmu 第1題
  A 10 g object connected to one end of a massless spring undergoes 50 oscillations in 5 seconds. What…
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• 113年 hce_kmu 第2題
  If a simple pendulum oscillates with small amplitude and its length is doubled, what happens to the…
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• 113年 hce_kmu 第13題
  The speed of a transverse wave on a string is 170 m/s when the string tension is 120 N. To what valu…
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• 113年 hce_kmu 第40題
  If two springs with spring constants $k$ and $3k$ respectively are connected in series and attached…
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• 113年 hce_kmu 第53題
  A police car with a 500 Hz siren is moving at 20 m/s. What is the total frequency change when the po…
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• 113年 hce_kmu 第54題
  A doppler flow meter transmit ultrasound of 10 MHz to measure the blood flow. If the reflected sound…
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• 113年 hce_kmu 第60題
  A spacecraft is flying towards Earth at a speed of 0.7 c. When it is 8 light-years away from Earth,…
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• 112年 hce_kmu 第7題
  The position of a particle is given by the expression $x = 4 \cos( 3 \pi t + \pi )$, where $x$ is in…
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• 112年 hce_kmu 第41題
  If middle C (262 Hz) and C$^\#$ (277 Hz) are played together, it would cause interference beats. Wha…
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• 112年 hce_kmu 第42題
  Tension is maintained in a string as in the figure. The observed wave speed is $v = 24\text{ m/s}$ w…
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• 112年 hce_kmu 第43題
  When an ambulance passes in front of an observer, the sound frequency is 440 Hz when the ambulance i…
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• 112年 hce_kmu 第47題
  A tuning fork is known to vibrate with frequency 262 Hz. When it is sounded along with a mandolin st…
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• 112年 hce_kmu 第56題
  A spaceship S$_1$ is moving away from us at a speed of 0.8 c. Another spaceship S$_2$ is moving away…
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• 111年 hce_kmu 第5題
  The figure shows a standing wave pattern in a string. What is the wavelength of one of the component…
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• 111年 hce_kmu 第6題
  The figure shows four situations in which a source of sound S and a detector D are either moving or…
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• 111年 hce_kmu 第7題
  What is the deterministic factor of a sound wave for the sound pitch?
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• 111年 hce_kmu 第32題
  A uniform cord has the mass per unit length $\lambda$ and it is arranged as that shown in the figure…
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• 111年 hce_kmu 第40題
  A block with a speaker bolted to it is connected to a spring having spring constant $k = 20\text{ N/m}$…
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• 110年 hce_kmu 第7題
  Compared to the graph below, which graph in choices shows that the amplitude and the frequency are d…
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• 110年 hce_kmu 第10題
  Two waves traveling in opposite directions interfere to produce a standing wave described by $y = 3 \sin(2x) \cos(5t)$…
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• 110年 hce_kmu 第47題
  A car approaches a stationary police car at $36\text{ m/s}$. The frequency of the siren (relative to…
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• 110年 hce_kmu 第48題
  A mass-spring system is shown in the figure where the spring constant $k = 100\text{ N/m}$ and the m…
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• 109年 hce_kmu 第1題
  Consider the block and spring system shown in the drawing. On the earth’s surface the natural freque…
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• 109年 hce_kmu 第12題
  One rope with weight 2.0 kg and length 10.0 m is tied on a shelf and stretched taut by a 98 kg box a…
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• 109年 hce_kmu 第57題
  A police car chases fugitives on the highway at 144 km/hr, its siren emitting sound at a frequency o…
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• 109年 hce_kmu 第58題
  Two cars are approaching to each other. Car A moves at speed $v_A = 108.0 \text{ km/hr}$, and the ca…
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• 109年 hce_kmu 第59題
  The wave function of the string wave is given by…
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• 109年 hce_kmu 第60題
  A standing sound wave pattern on a long string is described by $y(x,t) = 0.008 \times \sin(10\pi x) \cos(20\pi t)$…
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• 108年 hce_kmu 第2題
  The mass in the figure slides on a frictionless surface. If m = $2\text{ kg}$, $k_1$ = $800\text{ N/m}$…
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• 108年 hce_kmu 第9題
  The superposition of two waves $y_1 = (0.007cm)\cos[2\pi(\frac{156t}{s})]$ and $y_2 = (0.007cm)\cos[2\pi(\frac{150t}{s})]$…
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• 108年 hce_kmu 第42題
  An ambulance moves at a speed of $50\text{ km/hr}$, and its siren emitting sound at a frequency of $5.0\times10^2\text{ Hz}$…
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• 108年 hce_kmu 第43題
  One rope is wiggled with frequency f = $2.0\text{ Hz}$, amplitude A = $1.0\text{ m}$, and wave speed…
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• 107年 hce_kmu 第5題
  A violin is played with an initial intensity $I_i$ changing to a final intensity $I_f$. If $I_f = 5 I_i$…
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• 107年 hce_kmu 第40題
  A car approaches a stationary police car at $36$ m/s. The frequency of the siren (relative to the po…
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• 107年 hce_kmu 第41題
  A pipe open at both ends has a fundamental frequency of $f$. A second pipe closed at one end and ope…
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• 106年 hce_kmu 第8題
  A star radiates uniformly in all directions. At a distance of $5.0 \times 10^{12} \text{ m}$ from th…
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• 106年 hce_kmu 第11題
  A block whose mass $m$ is $650 \text{ g}$ is fastened to a spring whose spring constant $k$ is $65 \text{ N/m}$…
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• 106年 hce_kmu 第31題
  Two stationary tuning forks ($350$ and $352 \text{ Hz}$) are struck simultaneously. The resulting so…
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• 106年 hce_kmu 第46題
  A sound wave from a sound generator radiates uniformly in all directions in $22.0 ^\circ\text{C}$ ai…
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