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Helga [31]
3 years ago
14

True or false velocity is the slope of the acceleration versus time graph

Physics
2 answers:
Daniel [21]3 years ago
8 0
Its true.....................
Elena-2011 [213]3 years ago
5 0

I'm pretty sure it is true. (78% sure)

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Given a block of glass that is semi-circular, a laser pointer, protractor/ruler, and index card, design your own experiment to o
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Answer:

we go up the ramp there is a point where the beam is reflected inside the block, we carefully step back to the point where the beam is horizontal, we measure this angle which is our critical angle.

Explanation:

To design the experiment of measuring the critical angle, we describe the phenomenon, when the light passes from a medium with a higher refractive index to one with a lower index, it separates from the normal one and the Critical Angle is defined as the Angle for which the refraction occurs at 90º

            n₂ sin θ₂ = n₁ sin 90

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As we can see, we have to measure the angle with which the laser touches the exit surface of the glass block.

Design of the experiment:

    We place the glass block on the ramp and at the top we hit the conveyor for half the angle, we climb the block on the ramp and see that the angle of incidence of lightning on the exit face changes, part of the beam comes out of the glass , we see it by dispersion in the particles of dirty in the air; Maybe the conveyor or the laser should be moved slightly so that the beam touches the point of origin on the conveyor.

   

   When we go up the ramp there is a point where the beam is reflected inside the block, we carefully step back to the point where the beam is horizontal, we measure this angle which is our critical angle.

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3 years ago
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When objects are heated they tend to expand because
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When objects are heated, their molecules tend to vibrate fast. As they vibrate, the space between each atom increases. This keeps on happening, and the object expands until it has cooled down.
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Hello,

I believe they are a lever and a wedge.

I hope this helps!

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The speed downwards is 7 + (3*9.8)
7+ 29.4 = 36.4 m/s
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