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olganol [36]
2 years ago
9

I really need help with this, please make sure the answer is correct.

Physics
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

The answer is D.

Explanation:

When bases react with water, it will form OH- ions in the solution.

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A 1kg mass is thrown to a height of 2cm. what is the potential energy​
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  • Mass=m=1kg
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\\ \tt\hookrightarrow P.E=mgh

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2 years ago
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In a compound microscope, the objective has a focal length of 1.0 cm, the eyepiece has a focal length of 2.0 cm, and the tube le
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Answer:

The  value  is   m \approx   310

Explanation:

From the question we are told that

     The  focal length of the objective is  f_o =  1.0 \ cm

    The  focal length of the eyepiece is  f_e  =  2.0 \  cm

    The  tube length is  L  =  25 \  cm

Generally the magnitude of the overall magnification is mathematically represented as

            m =  m_o  *  m_e

Where  m_o is the objective magnification which is mathematically represented as

        m_o  =  \frac{L}{f_o }

=>      m_o  =  \frac{25}{1 }

=>      m_o  =  25

m_e is the eyepiece magnification which is mathematically evaluated as

     m_e  =  \frac{L }{f_e }

     m_e  =  \frac{25 }{ 2}

      m_e  =  12.5 \  cm

So

    m =  25 * 12.5

     m \approx   310

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Magnets are attracted when each of the different sides, most commonly known as "North" and "South", are facing each other. They repel when North and North, or South and South are facing each other.
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<span>47 amu is the correct answer</span>
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