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PSYCHO15rus [73]
3 years ago
7

What is the definition of half-life?​

Physics
1 answer:
kenny6666 [7]3 years ago
6 0
The time for half the atoms in a radioactive substance to disintegrate

https://www.vocabulary.com/dictionary/half-life
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An object is placed at O ona number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to
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You have a displacement of 5 units to the right.

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Automobiles must be able to sustain a frontal impacl The automobile design must allow low speed impacts with little sustained da
valentinak56 [21]

Answer: the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m

Explanation:

Given that;

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W_v = 1/2mv²

we substitute

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now, the the effective design stiffness k will be:

at the impact point, energy of the vehicle converts to elastic potential energy of the bumper;

hence;

W_v = 1/2kx²

we substitute

3125 = 1/2 × k (0.04)²

3125 = 0.0008k

k = 3125 / 0.0008

k = 3906250 N/m

Therefore, the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m

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