Material Density (g/cm³) Aluminum 2.7 Concrete 2.3 Copper 8.6 Gold 19.3 Ice 0.92 Iron 7.9 Lead 11.3 Mercury 13.6 Nickel 8.9 Saltwater 1.03 Silver 10.5 Water 1 Zinc 7.14 Part 1: Echo You are standing on a canyon edge and you give a shout. After 2.5 s have passed, you hear your echo. The temperature at the canyon is -8.2 °C. A.) Determine the speed of sound. B.) Determine how far away the cliff wall is that your voice bounced off of. Part 2: Long cable A transverse wave pulse travels along a 30 m long silver cable and returns 1.01 s later. The cable has a radius of 0.7 cm. A.) Determine the wave speed. B.) Determine the cable tension.

For numbers 4 to 6, consider A sinusoidal wave travels along a string. The time for a particular point to move from maximum amplitude to zero is 0.25 s. 4. What is the period of the wave? A. 0.25 s B. 0.50 s С. 1.0 s D. 2.0 s E. 4.0 s 5. What is the frequency of the wave? A. 0.25 Hz B. 0.50 Hz С. 1.0 Hz D. 2.0 Hz E. 4.0 Hz 6. If the wavelength is 4.0 m; what is the wave speed? A. 0.25 m/s B. 0.50 m/s с. 1.0 m/s D. 2.0 m/s E. 4.0 m/s

v Question Completion Status: QUESTION 14 The least number of beats per second will be heard from which pair of tuning forks? O a. 763 and 774 Hz O b.534 and 540 Hz C. 256 and 260 Hz d. 200 and 201 Hz QUESTION 15 Which of the following properties of a sound wave determine its "pitch"? a. Frequency b. Amplitude c. Distance from source to detector d. Phase QUESTION 16 A certain vibrating string on a piano has a length of 74.0 cm and forms a standing v Which harmonic does this wave represent? The second harmonic b) Determine the wavelength of this wave. 74cm C) How many nodes are there in the wave pattern? 3 Click Save and Submit to save and submit. Click Save All Answers to save all answers.

17. A 150 W light bulb emits radiation waves spreading out equally in all directions. What is the intensity of this radiation 2.0 m away? " A. 3.0 W/m^2 B. 4.0 W/m^2 C. 12 W/m^2 D. 24 W/m^2 E. 150 W/m^2

Part 1: Trains with passengers A railroad train is traveling at 34.2 m/s in still air. The frequency of the note emitted by the train whistle is 220 Hz. The air temperature is -9°C. A.) What frequency is heard by a passenger on a train moving in the opposite direction to the first at 35.8 m/s and approaching the first? B.) What frequency is heard by a passenger on a train moving in the opposite direction to the first at 35.8 m/s and receding from the first?

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A.)A wave has a speed of 260.0 m/s and a wavelength of 5.2 m. What is the frequency of the wave?  B.)What is the period of the wave?   .

What is the dynamic range of human ear?a. threshold of hearing (W/m2)b. threshold of pain (W/m2)c. SIL of threshold of hearing(dB)d. SIL of threshold of pain(dB)e. Sound intensity level of 200 dB

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An ethernet cable is 3.90 m long and has a mass of 0.210 kg. A transverse pulse is produced by plucking one end of the taut cable. The pulse makes four trips down and back along the cable in 0.810 s. What is the tension in the cable?N