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tekilochka [14]
3 years ago
11

Help Meeee Please!!!!! This was due so long ago... DO NOT REPORT, THERE IS NO REASON TO REPORT! Assignment: Weathering in Action

Exploration
You can see science in action all around you. In this activity, you will observe weathering.

Signs of Weathering| Mechanical or Chemical? Description of location

Flakes of brick -----

Cracks in rocks -----

Lichen growing on rocks------

Roots or plant growth ---------
making cracks in concrete

Worn away statues-------

Exposed rocks ----------

Rust on rocks -----------



Example You Found:







Sketches

Type of weathering:


Sketch:










Type of weathering:


Sketch:










Type of weathering:


Sketch:








I really need help, I don't understand this so please help me.
Below is the document to this it is the exact same as the question.
Physics
1 answer:
zaharov [31]3 years ago
3 0

Answer: Chemical

Explanation: because it is changeing its chemical structure if its wrong sorry .

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Two coherent sources of radio waves, A and B, are 5.00 meters apart. Each source emits waves with wavelength 6.00 meters. Consid
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Answer:

a

    z= 2.5 \ m

b

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Explanation:

From the question we are told that

     Their distance apart is  d =  5.00 \ m

      The  wavelength of each source wave \lambda =  6.0 \ m

Let the distance from source A  where the construct interference occurred be z

Generally the path difference for constructive interference is

              z - (d-z) =  m \lambda

Now given that we are considering just the straight line (i.e  points along the line connecting the two sources ) then the order of the maxima m =  0

  so

        z - (5-z) =  0

=>     2 z - 5 =  0

=>     z= 2.5 \ m

Generally the path difference for destructive  interference is

           |z-(d-z)| = (2m + 1)\frac{\lambda}{2}

=>         |2z - d |= (0 + 1)\frac{\lambda}{2}

=>        |2z - d| =\frac{\lambda}{2}

substituting values

          |2z - 5| =\frac{6}{2}

=>      z  =  \frac{5 \pm 3}{2}

So  

      z =  \frac{5 + 3}{2}

      z =  4\ m

and

      z =  \frac{ 5 -3 }{2}

=>   z =  1 \ m

=>    z =  (1 \ m ,  4 \ m )

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3 years ago
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