Question

2. Якщо під купол повітряного насоса покласти мобільний телефон i вiдкачати повітря, то дослiдник не почує сигналу виклику. Цей дослiд доводить, що... А) електромагнітні хвилі не поширюються у вакуумі. Б) 3вук - це повздовженя механiчна хвиля. В) у вакуумі мобільний телефон не працює.Г)механічні хвилі не поширюються у вакуумі.​

Answer 1

Відповідь:

Пояснення:

Я думаю, відповідь Г)    механічні хвилі не поширюються в вакуумі.

Answer 2

The Experiment and Its Implications

If a mobile phone is placed under the dome of an air pump and the air is pumped out, the researcher will not hear the signal of an incoming call. This experiment suggests that electromagnetic waves do not propagate in a vacuum.

Explanation

Electromagnetic waves are a form of energy that can travel through space and various mediums, including air, water, and solids. These waves consist of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of wave propagation.

In the case of a mobile phone, the device uses electromagnetic waves to transmit and receive signals. When a call is made, the phone converts the sound into an electrical signal, which is then modulated onto a carrier wave. This modulated wave, carrying the information, is transmitted through the air as electromagnetic radiation.

However, electromagnetic waves require a medium to propagate. In the experiment described, when the air is pumped out from under the dome, the medium through which the electromagnetic waves would normally travel is removed. As a result, the researcher does not hear the signal of the incoming call because the electromagnetic waves cannot reach their destination.

Conclusion

Based on the experiment, we can conclude that electromagnetic waves do not propagate in a vacuum. This is an important concept in physics and has implications for various fields, including telecommunications and space exploration.

Please note that the other options mentioned in the question, such as "sound waves are longitudinal mechanical waves" and "mechanical waves do not propagate in a vacuum," are not directly related to the experiment described and are not supported by the information provided.

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