Ulangan Harian Getaran Dan Gelombang

The statement is stating that X-ray is an example of electromagnetic radiation. This is true because X-rays are a form of electromagnetic radiation with high energy and short wavelengths. They are produced by the interaction of fast-moving electrons with matter. X-rays are commonly used in medical imaging to visualize the internal structures of the body and in various other applications such as security screening and industrial testing.

The statement "frekuensi adalah simpangan getaran paling besar" translates to "frequency is the largest deviation of vibrations." This statement is incorrect. Frequency refers to the number of vibrations or oscillations per unit of time, and it does not represent the magnitude or size of the vibrations. Therefore, the correct answer is false.

The given question states that a simple pendulum vibrates 10 times in 2 seconds. To find the frequency, we need to divide the number of vibrations (10) by the time taken (2 seconds). Therefore, the frequency of the vibrations is 10/2 = 5 Hz.

The correct answer is "Gelombang mekanik". This is because the question is asking for an example of a type of wave, and "Gelombang mekanik" refers to mechanical waves, which are waves that require a medium to travel through, such as water or air. Electromagnetic waves, electrical waves, and static waves are not examples of mechanical waves.

Based on the given image, the correct answer is D. However, without the image or any additional information, it is not possible to provide a specific explanation for why D is the correct answer.

The correct answer is 0.1 second because the period of a vibration is the time it takes for one complete cycle of the vibration. Since the given frequency is 10 Hz, which means 10 cycles per second, the period can be calculated by taking the reciprocal of the frequency, which is 1/10 or 0.1 second.

The video explains how vibrations are recorded to determine the strength and direction of an earthquake through the movement of the earth. This suggests that the statement "video ini mengungkapkan tentang perekaman getaran dalam mengetahui kekuatan dan arah gempa lewat gambaran gerakan bumi" is true.

The period of a wave is the time it takes for one complete cycle of the wave to occur. In this case, the slinky is vibrating for 15 seconds and completing 3 cycles (3 compressions and 3 rarefactions). Therefore, each cycle takes 15 seconds / 3 cycles = 5 seconds. So, the period of the wave is 5 seconds.

The speed of a wave is determined by the product of its frequency and wavelength. In this case, the given wave has a frequency of 10 Hz and a wavelength of 20 m. Multiplying these values together gives us a speed of 200 m/s.

The correct answer is gelombang mekanik dan gelombang elektromagnetik. Gelombang dapat dibedakan berdasarkan medium perambatannya menjadi gelombang mekanik, yang membutuhkan medium untuk merambat, dan gelombang elektromagnetik, yang dapat merambat tanpa medium. Gelombang bunyi dan gelombang cahaya adalah contoh gelombang mekanik dan gelombang elektromagnetik secara berurutan. Gelombang laut dan gelombang Bumi tidak mencakup semua jenis gelombang yang ada.

The correct answer is O-D-A-D-O-C-B-C-O. In the given sequence, the object experiences one vibration when it moves from O to D. This is because the object starts at position O, moves to position D, and then returns to position O. The other sequences do not show this specific movement pattern.

The given statement is false. The correct explanation is that the frequency of vibrations is inversely proportional to the time taken to complete one vibration. This means that as the time taken to complete one vibration increases, the frequency of vibrations decreases, not increases.

Stacioner waves occur when incoming waves and reflected waves combine with the same frequency and wavelength. This combination results in a standing wave pattern where certain points appear to be stationary. Therefore, the given statement is true.

The correct answer is 0,02 sekon, 0,02 s, 0,02, 1/50 sekon, 2/100 sekon. This is because the question asks for the period of the bee's wing vibration. The period is the time it takes for one complete cycle of vibration. Since the bee's wing moves 50 times per second, the period would be 1/50 sekon or 2/100 sekon, which is equal to 0,02 sekon or 0,02 s.

The correct answer is BC. In the given image, BC represents the amplitude of the vibration. Amplitude is the maximum displacement or distance from the equilibrium position of an oscillating object. In this case, BC represents the maximum distance the object moves from its equilibrium position during each cycle of vibration.

Pemanfaatan gelombang dalam teknologi mencakup penggunaan gelombang elektromagnetik untuk berbagai keperluan, seperti komunikasi melalui satelit, penggunaan energi matahari melalui sel surya, dan eksplorasi minyak dan gas menggunakan gelombang seismik. Namun, PLTN (Pembangkit Listrik Tenaga Nuklir) bukanlah pemanfaatan gelombang, melainkan menggunakan reaksi nuklir untuk menghasilkan energi listrik.

The correct answer states that the period of swing A is one-fourth (¼) of the period of swing B. This means that swing A takes less time to complete one full swing compared to swing B.

Based on the given image, the two sets of wave lengths are defined as A-B-C-D-E-F-G-H-I and a-b-c-d-e-f-g-h-i. Additionally, there is another set defined as A-b'-C-d'-E-f'-G-h'-I.

The correct answer is 0,2 m/s. The speed of a wave can be calculated by dividing the distance traveled in one period by the time taken for that period. In this case, the distance traveled in one period is given as 20 cm, which is equal to 0.2 meters. Since the frequency is given as 10 Hz, which means there are 10 periods in one second, the time taken for one period is 1/10 seconds. Dividing the distance by the time gives us a speed of 0.2 m/s.

Based on the amplitude, waves can be classified into two types, which are waves that are moving (berjalan) and waves that are stationary (diam). Additionally, waves that are moving can also be further classified into waves that are stationary (stasioner) and waves that are moving. Therefore, the correct answer is "berjalan dan diam, berjalan dan stasioner, stasioner dan berjalan, diam dan berjalan".