As discussed in the chapter, many species of bats find flying insects by emitting pulses of ultrasound and listening for the reflections. This technique is called echolocation. Bats possess several adaptations that allow them to echolocate very effectively. Some bats have specially shaped noses that focus ultrasound echolocation pulses in the forward direction. Why is this useful?A. Increasing intensity reduces the time delay for a reflected pulse.B. The energy of the pulse is concentrated in a smaller area, so the intensity is larger; reflected pulses will have a larger intensity as well.C. Increasing intensity allows the bat to use a lower frequency and still have the same spatial resolution.

Q: On a hot summer day, a pesky little mosquito produced its warning sound near your ear. The sound is…

A: Given : Rate of beating=600 beats per second              v=350m/s   1) (a) The frequency of a sound…

Q: How do we identify a high-pitched sound?A. High frequencies cause only weak vibrations of the…

A: Given:How do we identify a high-pitched soundAnswer:Option(c): The whole basilar membrane vibrates…

Q: A string on the violin has a length of 18 cm and a mass of 0.86 g. The fundamental frequency of the…

A: Given: Fundamental frequency, f1=1 kHz=1000 Hz Length of the string, L=18 cm=0.18 m Mass, m=0.86…

Q: You are in a room where there are two machines. One creates a sound level of 80 dB; and the other 90…

A: We have:The sound level created by the machine 1 is The sound level created by the machine 2 is The…

Q: You wish to put a 1000 kg satellite into a circular orbit 300 km above the earth’s surface. The…

A: *We'll answer only the first question since the question to be answered was not specified. Please…

Q: A string with a mass density of 8.0 g/m is under 40 N of tension. A. Write an expression for a…

A: A. The general expression for a transverse wave traveling along the positive y-axis is: The formula…

Q: Susan stands on the side of the road and observes a fire truck driving at 35 m/s. The truck turns on…

A:

Q: B. The siren on an ambulance in the distance has an apparent frequency of 738 Hz. The actual…

A: Page 1

Q: A guitar string is 80cm long and the tension is increase until the speed of a wave on the string is…

A: Given that:Length of the string, L=80 cm=0.80 mVelocity of the wave, v=819.2 m/sAir temperature,…

Q: You are traveling north on a highway moving at 23 m/sec. A police car is traveling toward you going…

A: It is given that

Q: window with an area of 0.450 m2 receives 26.0 J of sound energy in 6.00 seconds. a. What is the…

A:

Q: Light travels approximately 3.0 x 108 m/s in outer space. If yellow light from the sun has a…

A: Given that the velocity of light and wavelength of yellow light. Then We have to determine the the…

Q: 12.10. We will learn in Chapter 14 that brightness of light called its intensity I is inversely…

A:

Q: A student is listening to a band play a song. The student is sitting 25 m away from the band. They…

A:

Q: Earthquakes can produce three types of waves. One of these is a transverse wave called an S wave. A…

A:

Q: A laser beam has intensity I0.a. What is the intensity, in terms of I0, if a lens focuses the laser…

A:

Q: Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing…

A: The beat frequency is given by Where f1 and f2 are frequencies of combining waves.

Q: A string on a guitar-like instrument 0.68 m long has a tension of 20 N and a mass per unit length of…

A:

Q: ASK YOUR TEACHER As shown below, the red train is stationary and the green train is moving forward…

A:

Q: A student standing in a canyon yells "echo", and her voice produces a sound wave of frequency of f =…

A: Given data as per question v  =  329m/s f  =  0.79kHz t  =  4.9s

Q: а. What the new wavelength of the wave (in m) after the source halved the frequency? b. What the new…

A: a) The wave’s new wavelength can be given as, Here, f, v, and ? represent the wave’s frequency,…

Q: A car alarm goes off with a frequency of 2800 Hz in air with sound speed of 341 m/s. a. What…

A: Given data The frequency of the alarm is f = 2800 Hz. The speed of the sound is v = 341 m/s. The…

Q: A wave initially has an amplitude of 2m, but its amplitude soon changes to 4m. What is the new wave…

A: The initial amplitude of a wave is, A=2 m The initial energy of the wave is, U1=12kA2=12k22=2k

Q: Suppose you're on a hot air balloon ride, carrying a buzzer that emits a sound of frequency . If you…

A: The correct answer is option 'b': The frequency decreases and the intensity of the sound decreases.

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.