Latihan Soal SiSTEM Sonar

The human ear can perceive sounds within a frequency range of 20 to 20,000 Hz. Frequencies below 20 Hz are considered infrasound and are typically felt rather than heard. Frequencies above 20,000 Hz are considered ultrasound and are also not audible to the human ear. Therefore, the correct answer is 20 - 20,000 Hz.

The difference between transverse waves and longitudinal waves lies in the direction of vibration. In transverse waves, the particles vibrate perpendicular to the direction of wave propagation, while in longitudinal waves, the particles vibrate parallel to the direction of wave propagation. Therefore, the correct answer is "Arah getarnya" which translates to "the direction of vibration."

The correct answer is "Gelombang Longitudinal". Gelombang longitudinal adalah jenis gelombang yang merambat dengan arah getaran yang sejajar dengan arah perambatannya. Gelombang suara adalah contoh gelombang longitudinal. Dalam konteks ini, kelelawar menggunakan sistem sonar yang menggunakan gelombang suara untuk membantu mereka terbang di malam hari tanpa menabrak benda-benda di sekitarnya.

The correct answer is Gelombang Longitudinal and Ultrasonik. Gelombang longitudinal adalah gelombang yang merambat dalam arah yang sejajar dengan getaran partikel mediumnya. Pada sistem sonar kelelawar, gelombang suara yang dipancarkan oleh kelelawar adalah gelombang longitudinal yang merambat melalui medium udara. Ultrasonik adalah gelombang suara dengan frekuensi di atas batas pendengaran manusia, yang digunakan oleh kelelawar untuk berkomunikasi dan mendeteksi mangsanya. Oleh karena itu, jawaban yang benar adalah Gelombang Longitudinal dan Ultrasonik.

The correct answer options for this question are "Pemantulan, Perambantan melalui media, berbalik arah." These characteristics are associated with the use of waves in sonar systems. Pemantulan refers to the reflection of waves off surfaces, which is important in sonar for detecting objects underwater. Perambantan melalui media refers to the propagation of waves through a medium, which is how sonar waves travel through water. Berbalik arah means the waves change direction, which is necessary for sonar to detect objects in different directions. These characteristics are crucial for the functioning of sonar systems in detecting and locating underwater objects.

During the experiment, Pak Anton used a sonar system to measure the depth of the lake. The sonar system emits a wave and measures the time it takes for the wave to bounce back, which can then be used to calculate the depth of the lake. In this case, the wave took 2 seconds to bounce back. Since the speed of sound in water is approximately 1500 meters per second, we can calculate the depth of the lake by multiplying the speed of sound by the time it took for the wave to bounce back. Therefore, the depth of the lake is 1500 meters per second times 2 seconds, which equals 3000 meters or 3 kilometers. However, since the answer given is in meters, we convert 3 kilometers to meters, which is 3000 meters.

Based on the information given, Anton wants to prove that sound can be used to measure depth. He accompanies his father, who is a well mechanic. They prepare a device to measure the depth of the well, and they find that the device receives a wave after 0.5 seconds. Knowing that the speed of the wave is 500 m/s, we can calculate the depth of the well using the formula distance = speed × time. Therefore, the depth of the well that Anton's father will fix is 12.5 meters.