2 years ago

The parachutists are not hurt when they jump out of an airplane, why?

1 answer:

7 0

When the parachute deploys it increases the persons air resistance to (temporaily) greater than the force of weight. This causes them to decellerate. As they decellerate resistance decreases again until once again it balances out. Terminal velocity is reduced to a safe level, and landing without injury is possible.

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Which property describes the ability of one substance to dissolve in another substance?

oee [108]

The answer would be solubility

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3 years ago

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

kow [346]

Answer:

0.15625 grams

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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.

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After 56 years, the leftover quantity = 0.625 grams

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2 years ago

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2 years ago

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2 years ago

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miss Akunina [59]

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3 years ago

The parachutists are not hurt when they jump out of an airplane, why?​

The parachutists are not hurt when they jump out of an airplane, why?