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marshall27 [118]
3 years ago
10

Help with these questions please?

Physics
1 answer:
serg [7]3 years ago
7 0

Answer:

7. 1.56

8. A curved line that slopes upward

Explanation:

7. The curve for quartz at the left side of the graph (400 nm) is just above the middle of the distance between 1.5 and 1.6, so is best approximated by 1.56.

___

8. The graph shows n vs. wavelength. The question asks about n vs. frequency. Frequency is inversely proportional to wavelengh, which means you need to describe the curve from right to left, rather than left to right. From right to left, the curve rises, so can be called "a curved line that slopes upward."

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Answer:

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3 years ago
Three identical train cars, coupled together, are rolling east at 1.8 m/s . A fourth car traveling east at 4.5 m/s catches up wi
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Answer:

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v₁ = v₂ = v₃ = v₄ = v₅ = v

using conservation of momentum

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3 years ago
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Answer:

D

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transparent_objects that allows light to pass through and can you see through them

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