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HACTEHA [7]
3 years ago
11

PLEASE HURRY

Physics
1 answer:
VLD [36.1K]3 years ago
5 0

Answer:

Wilhelm Conrad Roentgen (1845-1923)

Antoine Henri Becquerel (1852-1908)

Pierre (1859-1906) and Marie (1867-1934) Curie

Explanation:

Wilhelm Conrad Roentgen (1845-1923)

Contribution:  Discovery of x-rays in 1901.

Antoine Henri Becquerel (1852-1908)

Contribution: He discovered that radioactivity is the separation of x-rays and document and the difference between two.

Pierre (1859-1906) and Marie (1867-1934) Curie

Contribution: She discovered Polonium and Radium in1911

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Answer:

\mu =0.75

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<u>Frictional Force </u>

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A nuclear reactor is:
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