Please answer the 10question thanks 1. Multiple Choice. Write the letter of the correct answer on the space provided before the number_1. When a wave travels through a mediumA. particles are transferred from one place to anotherB. energy is transferred in a periodic mannerC. energy is transferred at a constant speedD. none of the above statements is applicable_2. When sound travels through air, the air particlesA. vibrate along the direction of wave propagationB. vibrate but not in any fixed directionC. vibrate perpendicular to the direction of wave propagationD. do not vibrate_3. The frequency of a wave travelling at a speed of 500 ms² is 25 Hz. Its time period will beA. 20 sB. 0.05 sC. 25 sD. 0.04 s4. Sound waves do not travel throughB. liquidsC. gases5. A source of 500 Hz frequency emits waves of wavelength 0.4 m. How long does the waves take toA. solidsD. vacuumtravel 600 m?C. 9 s6. An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the timeinterval between the sending and receiving of the wave is 1.6 s. What is the depth of the sea, if theA. 3 sВ. 6 5D. 12 svelocity of sound in seawater is 1400 m/s?C. 1,120 mD. 1,400 m_7. At what temperature, the speed of sound in air will becomes double of its value at 27°C?D. 927°C8. The first overtone of a stretched wire of a given length is 320 Hz. The first harmonic isD. 160 HzA. 112 mB. 560 mA. 27°CB. 54 °CС. 327°СA. 640 HzB. 480 HzС. 320 Hг_9. An aircraft is moving away from you at half the speed of sound, which, on that day is about 340m/s. The jet engines make a sound that is primarily about 300 Hz. What is the apparent frequency of thejet engines?A. 150 HzВ. 200 HzC. 470 HzD. 600 Hz10. What is the frequency heard by a stationary observer when a train approaches with a speed of30m/s? The frequency of the train horn is 600 Hz and the speed of sound is 340 m/sA. 570 HzВ. 630 HzC. 653 HzD. 658 Hz

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1. Multiple Choice. Write the letter of the correct answer on the space providęd before the number 1. When a wave travels through a medium A. particles are transferred from one place to another B. energy is transferred in a periodic manner C. energy is transferred at a constant speed D. none of the above statements is applicable _2. When sound travels through air, the air particles A. vibrate along the direction of wave propagation B. vibrate but not in any fixed direction C. vibrate perpendicular to the direction of wave propagation D. do not vibrate _3. The frequency of a wave travelling at a speed of 500 ms² is 25 Hz. Its time period will be D. 0.04 s A. 20 s B. 0.05 s C. 25 s