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Katarina [22]
3 years ago
10

2.5 gram sample of a radioactive element was formed in a 1960 explosion of an atomic bomb at Johnson Island in the Pacific Test

Site. The half-life of the radioactive element is 28 years. How much of this element will remain after 112 years
Physics
1 answer:
kow [346]3 years ago
5 0

Answer:

0.15625 grams

Explanation:

Half life: It is related to the decay of radioactive material. The duration in which  half of the material will be degraded/decayed. That means after half life 50% of the radioactive material will be left. Here the half life is 28 years.

Initial quantity of the sample: 2.5 grams.

After 28 years, the leftover quantity = 1.25 grams

After 56 years, the leftover quantity = 0.625 grams

After 84 Years, the leftover quantity = 0.3125 grams

After 112 years, the leftover quantity = 0.15625 grams

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We need to rank the objects according to the magnitude of their momentum.

We know momentum ,P = m\times v{ here m is mass and v is velocity }

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3 years ago
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fiasKO [112]

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Chris threw a basketball a distance of 27.5 m to score and win his
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Answer:

v₀ = 16.55 m/s

Explanation:

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