Вопрос № 1056232 - Экология

The noise level produced by a bus moving down the street is 90 dB. The sanitary-hygienic standard of the noise level is 40 dB, thus the noise produced by a bus exceeds it by _______ times. (Give your answer as a whole number.)

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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 18:03
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 18:03

Вопрос № 606967

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A communication system that does not allow an interchange between the message source and the receiver is said to be a one-way or "simplex" communication setup. One that does allow an interchange is a two-way or "duplex" setup. Noise is an important concept in communication theory. Noise is defined in communication theory as any signal that interferes with the message being sent and is an undesired disturbance in a communication system. Radio static is a form of noise. Dirt on a camera lens is noise also.

Radio wave is a form of noise.

Dirt on a camera is static.

Noise is an important concept in Physics.

If there is dirt on a camera lens, it is also noise.