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Marizza181 [45]
3 years ago
9

Describe how refraction concentrates wave energy so that some parts of a beach erode more.

Physics
1 answer:
Zigmanuir [339]3 years ago
3 0

Refraction is the bending of the waves which is result of the fact that different parts of the wave reach the water with different speeds because of the angle approaching the shore.

<span>The wave refraction disperses the wave energy in quiet water areas and sand is deposited.<span>  </span></span>



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Three boards, each 50 mm thick, are nailed together to form a beam that is subjected to a 1200-N vertical shear. Knowing that th
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Answer:

Using equation

qs=F

q=VQ/I   V=1200

q=998.45 N

qs=F

s=F/q

s=700/998.45

spacing=s=0.701 m

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3 years ago
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which element is less reactive, an element whose atoms have seven valence electrons or an element whose atoms have eight valence
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Which element is less reactive, an element whose atoms have seven valence electrons or an element whose atoms have eight valence electrons? Why?<span>an element with 8 valence electrons because it doesn't require any additional electrons to become stable</span>
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B. five electrons

If you want an explanation, here it is.

The atomic number gives the number of protons. Protons which have a positive charge are balanced by an equal number of electrons in a neutral atom. Boron number 5 has five protons and therefore as a neutral atom also has five electrons.
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An electron has a mass of 9.1x10-31 kg. What is
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Answer:

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A truck moving at 13.3 m/s hits a concrete wall. As a result of the collision, a 6-kg wrench moves forwards and strikes the wall
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Answer:

Explanation:

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= mv = 6 x 13.3 = 79.8 kg m /s

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