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SashulF [63]
3 years ago
8

Explain how physical evidence is analyzed and presented in the courtroom by the forensic scientist. And HOW admissibility of evi

dence is determined in the courtroom.
Chemistry
1 answer:
valentina_108 [34]3 years ago
7 0

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

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#18: all atoms of the same element have the same<br> a)number of neutrons<br> b)atomic number
romanna [79]
Number of neutrons.
The atomic number is a way of identifying elements so if the were all the same than that wouldn't work very well :)
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3 years ago
How many oxygen atoms are in an ozone molecule?
Margaret [11]
Molecular formula of Ozone is O3. Hence ozone molecule contains 3 oxygen atoms.

Hope this helps!
5 0
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Which changes occur when Pt2+ is reduced? A) The Pt2+ gains electrons and its oxidation number increases. B) The Pt2+ gains elec
mel-nik [20]

Answer:

C

Explanation:

5 0
3 years ago
A ____ is the remains of a once-living organism found in layers of rocks, ice, or amber
aksik [14]

Answer:

fossil

Explanation:

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8 0
3 years ago
Read 2 more answers
Briefly describe four ways that a beam can be strengthened?​
lara31 [8.8K]

Answer:

1. Changing Beam Material

2. Corrugation

3. Changing Beam form

4. Steel Reinforcing Bars

Explanation:

Changing Beam Material

Some materials are stronger when used in beams than others. Beams made of steel for instance are stronger than beams made of wood. Therefore changing material can improve the strength of the beam. It is quite important to take into account the weights of the material though as different structures have different requirements.

Corrugation.

You can fold the beam into triangular shapes to increase strength. If you look at roofs you will notice that they are folded and this increased their strength. The same logic can be applied to beams.

Changing Beam Form

Another way to make Beams stronger is to change their form or rather their shape. Straight beams are not as strong as I-beams for instance. I-beams look like the capital letter I with the lines at both ends. I-beams are usually used in construction which shows that they are quite strong.

Steel Reinforcing Bars

When placed in concrete beams, Steel Reinforcing Bars which are also called Rebar can help strengthen a beam by helping it withstand the forces of tension. A concrete beam with Rebar inside it is known as Reinforced Concrete.

8 0
3 years ago
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