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zhenek [66]
3 years ago
10

For horizontally-launched projectiles, which of the following describes acceleration in both directions with a = 0 and a = -9.8m

/s^2
1. Acceleration is constant in both directions
2. Acceleration is -9.8m/s^2 in both directions
3. Acceleration is zero in both directions
4. Acceleration is equal in both directions ​
Physics
1 answer:
natulia [17]3 years ago
5 0

Answer:

4 is the best option for it as there are some stuff in grade to ye

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According to the law of refraction, light passing from air into a piece of glass at an angle of 30 degrees will cause the light
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Answer:

bend toward the normal line

Explanation:

When light passes from a less dense to a more dense substance, (for example passing from air into water), the light is refracted (or bent) towards the normal.   In your question the light is moving from rarer to denser medium

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The collective body of observations of a natural phenomenon on which scientific explanations are based is called?
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Experimental Evidence.

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A semi-infinite solid is
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Answer:

D. infinitely extended in all directions

Explanation:

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It is also expands as heat is applied because its thickness is negligible.

This idealized body is used for earth, thick wall, steel piece of any shaped quenched rapidly etc indetermining variation of temperature near its surface & other surface being too far to have any impact on the region in short period of time since heat doesn’t have sufficient time to penetrate deep into body thus thickness can be neglected

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3 years ago
What type of rock forms most often near an active volcano?
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Extrusive Igneous Rock

3 0
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Light of wavelength 633 nm from a He-Ne laser passes through a circular aperture and is observed on a screen 4.0 m behind the ap
Verizon [17]

Answer:

The answer is "1.144 \times 10^{-4} \ m".

Explanation:

w=\frac{2.44 \lambda L}{D}\\\\D=\frac{2.44 \lambda L}{w}\\\\

   =\frac{2.44 \times 633 \times 10^{-9}\times 4 }{0.054}\\\\=\frac{6178.08\times 10^{-9}}{0.054}\\\\=1.144 \times 10^{-4} \ m

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3 years ago
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