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3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N. Which of the following is the fre

3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N. Which of the following is the frequency of the third harmonic for a standing wave on this string? a) 152 Hz b) 159 Hz c) 166 Hz d) 169 Hz e) 173 Hz 4. How far should you be from a 0.12 W source of sound to hear the sound at 96 dB? (Assume the sound is emitted uniformly in all directions.) a) 7.76 m b) 6.65 m c) 4.90 m d) 2.45 m e) 1.55 m

3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N. Which of the following is the frequency of the third harmonic for a standing wave on this string? a) 152 Hz b) 159 Hz c) 166 Hz d) 169 Hz e) 173 Hz 4. How far should you be from a 0.12 W source of sound to hear the sound at 96 dB? (Assume the sound is emitted uniformly in all directions.) a) 7.76 m b) 6.65 m c) 4.90 m d) 2.45 m e) 1.55 m

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1. Kiss FM Radio broadcasts at 102.5 on the dial. This stands for 102.5 Megahertz or 102,500,000 Hz Radio waves travel at the speed of light, which is 3.0 x10 m/s. What is the wavelength that Kiss FM uses to broadcast its music? HzA sound wave travels at 3

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1. Kiss FM Radio broadcasts at 102.5 on the dial. This stands for 102.5 Megahertz or 102,500,000 Hz Radio waves travel at the speed of light, which is 3.0 x10 m/s. What is the wavelength that Kiss FM uses to broadcast its music? HzA sound wave travels at 350 m/s in the air. A distant horn is producing a note that has a frequency of 480 2a. What is the period of the wave? 2b. What is the wavelength? seconds. The speed of sound that day was 351 m/s. The sound you made had a frequency of 385 Hz. 3a. How far was it to the far side of the canyon? 3b. What was its wavelength? 30. What was its period? 4. A green dress reflects light that has a wavelength of 535 nm. 4a. Find the frequency of the waves. 4b. Find the period of the waves.

A parked car is honking its horn loudly. You see your friend standing still next to the honking car. You ride your bike quickly towards your friend and the honking car. Which of the following best describes how you hear the car horn compared to what

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A parked car is honking its horn loudly. You see your friend standing still next to the honking car. You ride your bike quickly towards your friend and the honking car. Which of the following best describes how you hear the car horn compared to what your friend hears? (A) You hear a higher pitch than your friend, because the wave compressions. (B) reach your ear with higher frequency. (C) You hear a higher pitch than your friend, because sound waves gain energy as they spread out. (D)You hear a lower pitch than your friend, because sound waves lose energy as they spread out. (D) You hear a lower pitch than your friend, because the wave compressions reach your ear with higher frequency.

A source emitting the sound of frequency 400 Hz is tied to a string of length 1 m and rotated with an angular speed of 30 rad/s in the horizontal plane. Maximum frequency observed by an stationary observer is n ~ 10 Hz. Find n. (V sound = 330 m/s) Answer:

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A source emitting the sound of frequency 400 Hz is tied to a string of length 1 m and rotated with an angular speed of 30 rad/s in the horizontal plane. Maximum frequency observed by an stationary observer is n ~ 10 Hz. Find n. (V sound = 330 m/s) Answer: Enter your answer here. Back Space 7 8 9 5 6 1 2 N Clear