3 years ago

What is the name of the first satellite sent into space

1 answer:

6 0

On October 4, 1957, Soviet satellite Sputnik, the world's first artificial satellite, blast into space and transmitted information via radio signals to Soviet scientists for three weeks. Sputnik II was launched in November 1957 with a a dog called Laika aboard.

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A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium is found to be 31:1,

iris [78.8K]

Answer:

Explanation:

Argon to potassium ratio after 1 half life = 1:1

After 2 half lives = 75/25= 3:1

After 3 half lives = 87.5/12.5= 7:1

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After 5 half lives = 96.875/3.125 = 31/1

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Papessa [141]

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3 years ago

A substance freezes at -58c therefore substance melts at ?

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The freezing point is the same as the melting point.

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