1031kylepoe03
06.01.2020 •
Physics
Why is 21-cm radiation so important to the study of interstellar matter and the galaxy
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Ответ:
Because its the most suitable radiation for that use
Explanation:
Astronomers use the 21 cm radiation for interstellar and cosmological research as this type of radiation is best suitable for the purpose its intended for. It can easily go through gas and dust molecules and other interstellar bodies that causes a blur vision of the content of space.
Ответ:
0.4 A
Explanation:
From the question,
Electric power = Voltage×current
P = VI Equation 1
Make I the subject of the equation
I = P/V Equation 2
Given: P = 96 J/s, V = 230 V.
Substitute into equation 2
I = 96/230
I = 0.4 A.
Hence the current is 0.4 A