Осцилације - тест 1

1. Како се зове време за које љуљшка оде од највише тачке А до тачке Б и поново се врати у тачку А.

фреквенца

период

амплитуда

елонгација

The correct answer is "период". In physics, the term "period" refers to the time it takes for an object or a wave to complete one full cycle of motion or oscillation. In this context, the question is asking for the name of the time it takes for a swing to go from its highest point A to point B and back to point A again. This is commonly known as the period of the swing.

Explanation

The correct answer is "период". In physics, the term "period" refers to the time it takes for an object or a wave to complete one full cycle of motion or oscillation. In this context, the question is asking for the name of the time it takes for a swing to go from its highest point A to point B and back to point A again. This is commonly known as the period of the swing.

2. Наведене су физичке величине које описују таласно кретање и њихове ознаке. Повежи физичке величине и одговарајуће ознаке:

таласна дужина

амплитуда таласа

фреквенција таласа

период осциловања

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3. Лонгитудинални механички таласи се простиру

кроз супстанце свих агрегатних стања

само кроз флуиде

само кроз чврста тела

Longitudinal mechanical waves can propagate through substances in all states of matter, including fluids and solids. This means that they can travel through gases, liquids, and solids, unlike transverse waves that can only travel through solids. Therefore, the correct answer is that longitudinal mechanical waves can propagate through substances in all states of matter.

Explanation

Longitudinal mechanical waves can propagate through substances in all states of matter, including fluids and solids. This means that they can travel through gases, liquids, and solids, unlike transverse waves that can only travel through solids. Therefore, the correct answer is that longitudinal mechanical waves can propagate through substances in all states of matter.

4. Шта би требало да урадимо клатну које осцилује да би му се повећао период осциловања? Заокружи слово испред тачног одговора.

требало би да смањимо дужину клатна

требало би да повећамо масу клатна

требало би да смањимо масу клатна

требало би да повећамо дужину клатна

To increase the period of oscillation of a pendulum, we should increase the length of the pendulum. This is because the period of a pendulum is directly proportional to the square root of its length. By increasing the length, the pendulum takes longer to swing back and forth, resulting in a longer period of oscillation.

Explanation

To increase the period of oscillation of a pendulum, we should increase the length of the pendulum. This is because the period of a pendulum is directly proportional to the square root of its length. By increasing the length, the pendulum takes longer to swing back and forth, resulting in a longer period of oscillation.

5. Ако се повећа дужина математичког клатна 4 пута за колико му се повећа период осциловања?

4

2

16

3

When the length of a mathematical pendulum is increased four times, the period of oscillation will be doubled. This is because the period of a pendulum is directly proportional to the square root of its length. Therefore, if the length is increased four times, the square root of the length will be doubled, resulting in a doubled period of oscillation.

Explanation

When the length of a mathematical pendulum is increased four times, the period of oscillation will be doubled. This is because the period of a pendulum is directly proportional to the square root of its length. Therefore, if the length is increased four times, the square root of the length will be doubled, resulting in a doubled period of oscillation.

6. Три таласа 1, 2 и 3 се простиру истом брзином али имају различите фреквенције и таласне дужине. На линије упиши одговарајућу ознаку таласа.

Највећу таласну дужину има талас број

Највећу амплитуду има талас број

Највећу фреквенцију има талас број

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7. На слици је приказан трансверзални талас који се простире кроз неку средину и једна честица А те средине. Стрелицама су означени правац и смер кретања те честице. На којој слици је исправно приказано кретање честице А?

на слици 1

на слици 2

на слици3

на слици 4

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Explanation

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8. Тело закачено о опругу осцилује између тачака А и В као на слици. Ако тело растојање између тачака А и В пређе за 0,1 s, колики је период осциловања?

0,2s

0,1s

5s

10s

The period of oscillation is the time it takes for the body to complete one full cycle of oscillation. In this case, the body oscillates between points A and B. If the distance between points A and B is covered in 0.1s, it means that the body completes half of the oscillation in 0.1s. Therefore, the full oscillation will take twice that time, which is 0.2s.

Explanation

The period of oscillation is the time it takes for the body to complete one full cycle of oscillation. In this case, the body oscillates between points A and B. If the distance between points A and B is covered in 0.1s, it means that the body completes half of the oscillation in 0.1s. Therefore, the full oscillation will take twice that time, which is 0.2s.

9. Најмања брзина простирања звука постиже се у

чврстим телима

течностима

гасовима

вакууму

The speed of sound is the slowest in gases compared to solids, liquids, and vacuum. In gases, the molecules are far apart and have more freedom to move, which leads to a slower propagation of sound waves. In solids and liquids, the molecules are closely packed, allowing sound waves to travel faster. In a vacuum, there are no molecules to transmit sound waves, so there is no speed of sound.

Explanation

The speed of sound is the slowest in gases compared to solids, liquids, and vacuum. In gases, the molecules are far apart and have more freedom to move, which leads to a slower propagation of sound waves. In solids and liquids, the molecules are closely packed, allowing sound waves to travel faster. In a vacuum, there are no molecules to transmit sound waves, so there is no speed of sound.

10. На слици је приказан талас који се простире дуж конопца. Брзина таласа је 30 метара у секунди. Колики је период таласа.

5 s

90 s

0,2 s

10 s

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Explanation

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