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riadik2000 [5.3K]
3 years ago
12

A 20 g bullet is shot from a 10 kg gun with a velocity of 400 m/s. What

Physics
1 answer:
Nady [450]3 years ago
3 0

Answer: -.80m/s

Explanation:

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A bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature (assumed 20°C). Exp
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Answer:

23

21.7391304348 m

Explanation:

L = Initial length = 500 m

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Change in length is given by

\Delta L=L\alpha \Delta T\\\Rightarrow \Delta L=500\times 12\times 10^{-6}\times (40-(-35))\\\Rightarrow \Delta L=0.45\ m

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Each bridge section length would be

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