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- Elephants and whales are known to use infrasound to communicate over very large distances. What are the advantages of infrasound for long distance communication?. A person stands directly in front of Iwo speakers that are emitting the same pure tone. The person then moves to one side until no sound is heard. At that point, the person is 7 in from one of the speakers and 7.2 in from the other. What is the frequency of the tone being emitted?A VOcaro0 | Ohline vo.. se Mirsal The Ri.. alió ö Lio Demo document Liveworksheets.co... chnological College Apps Social networks Tihe ocedures Useful Links► Help» This module * Participants » Sulaiman based on Chapter-11 sics 2 What is the frequency of the sound wave in the air when the temperature is 350 K and the wavelength is 0.7 m? (Use speed of sound at 0 C = 331 m/s) of Select one: а. 350 Hz estion b. 245 Hz c. 535.40 Hz Previous page Next page Chapter-12 Optics► actice Quiz Experiment-1, T-2, AY Jump to... 20-21
- What are sound waves. Explain its characterstics.Loudness of waves is measured in what? What is the maximum safe level for loudness for humans? High frequency sounds have pitch. List things that have a low pitch. Our ears detect sound faster through what type of medium? At room temperature, how fast does sound travel through the air? Define Doppler Effect. Describe the frequency and pitch of the waves in the doppler effec What are two things that are not safe for the human ears to hear? Visible Light List the colors of visible light (colors of the rainbow) in order.om/public/activity/6001004/assessment G Google Redirecting... GM Mail G Images M Wrigley Zearn Math: A Com. 1 6.1.4 Qulz Wave Interactions Question 10 of 10 Which pair of waves could overlap to produce a wave with a higher amplitude through interference? A. Two waves of different amplitudes that are also different types of waves B. Two waves of different amplitudes with crests that overlap troughs C. Two waves of the same amplitude with crests that are perfectly aligned D. Two waves of the same amplitude with crests that overlap troughs SUBMIT E PREVIQUS
- S Savvas Realize x Reading lo Do, i-Keady x A Interactivity: Modeling Wavel b Search colegia arg 418aac3aa25274/cr ww.savvasrealire.com/assignments//virwer/classes/7cedb67c91:546e68635efa interactivity: Madeling Waves A classioom.google.com Use Models to Explain Phenomena A wave is a disturbance that transfers energy from one place to another. Some waves need a medium for the energy to travel through. The waves you see on a lake or the ocean are traveling through water, which is the medium. 3. In the wave models, you imagined adding energy into the wave by moving your arm up and down or back and forth. These are called mechanical waves. Explain how you know that energy traveled from you to your friend. In your answer, identify the medium that the energy traveled through. SAMSUNGA airplane approaches at an altitude of 10 km flying at 600 km/hr. 1. If the air temperature at that altitude is -50 °C, what is the speed of sound in air there? 2. How does that differ from the speed of sound in air typically at Earth's surface? 3. If the plane will be overhead in 1 minute, when will we hear it coming? You may assume an average speed along the path from the plane to your ear. THE ANSWER TO QUESTION 3 PLEASEWhat is space wave propagation? Give two examples of communication system which use space wave mode. A TV tower is 80m tall. Calculate the maximum distance upto which the signal transmitted from the tower can be received.
- A airplane approaches at an altitude of 10 km flying at 600 km/hr. 1. If the air temperature at that altitude is -50 °C, what is the speed of sound in air there? 2. How does that differ from the speed of sound in air typically at Earth's surface? 3. If the plane will be overhead in 1 minute, when will we hear it coming? You may assume an average speed along the path from the plane to your ear. 4. Jet engines typically emit sound over a wide spectrum of frequencies, with the maximum sound energy at 200 Hz. From this emitted sound, what frequency do you hear initially when it is 1 minute away, and what frequency do ou hear 1 minute after it has passed by? 5. What would you hear, and when would you hear it, if the plane were "hypersonic", traveling three times the speed of sound, or "Mach 3"? That's approximately the fastest military aircraft in routine service today.AGREE OR DISAGREE Directions: Write the word Agree if the statement is correct. Otherwise, write the word Disagree. Statements Agree/Disagree 1. Vibrations of materials do not create sound. 2. Sound can trúvél in á vůčuuim úf itn space. 3. Sound travels faster in wind than in solid materials like steel. 4. Red, which is the first color in the invisible spectrum, has the highest frequency. 5. Light does not have anything to do with the color we see on objects. 6. Violet has the lowest energy because it has the lowest frequency. 7. Heat and temperature are one and the same. 8. When an object is heated, the motion of the molecules of that object slows down. 9. Heat is something that an object contains. 10. Convection, as a method of heat transfer, does not involve the movement of air imolecules.Part 2: 1. How much louder is a 90 dB sound com- pared to a 70 dB sound? ano ranoileaup A. 20 times louder B. Twice as loud C. 28% louder D. 100 times louder sup dace jot iou E. 1000 times louder 2. Suppose two bar magnets are arranged N to N. Which of the following could NEVER happen due to the magnetic force? 6.