Science 8 | Physics | Unit 11. Sound Looking at vibrations

Choose the correct answer.
1 hertz is equal to

1 vibration per minute
600 vibrations per minute
10 vibrations per minute
60 vibrations per minute

Giải thích

The correct answer

60 vibrations per minute
1 vibration per minute
10 vibrations per minute
600 vibrations per minute

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Answer the question.
If an object vibrates 20 times each second, we say that its frequency is 20 Hz. The symbol Hz stands for
, the unit of frequency.
Đáp án
If an object vibrates 20 times each second, we say that its frequency is 20 Hz. The symbol Hz stands for
, the unit of frequency.
Giải thích

The correct answer
hertz
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Choose the correct answer.
An object that vibrates 120 times in one minute has a frequency of
.

0.5 Hz
2.0 Hz
60 Hz
120 Hz

Giải thích

The correct answer

2.0 Hz
0.5 Hz
60 Hz
120 Hz

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