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Ivahew [28]
3 years ago
11

Why is pH so important to maintain life?

Physics
1 answer:
morpeh [17]3 years ago
4 0
I think they are right! When one of the answers is, all of the above, that is usually the correct answer. pH is important to all living things.
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This is a bitter guord flower. Pick out the correct statement related to the picture:
xenn [34]

Answer:

look if its at school

Explanation:

just ask teacher to help because if we say you will not learn

just say to teacher"pls can you help me with this and everything you

don't understand

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What is the difference between a meteorite and a asteroid?
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8 0
3 years ago
Read 2 more answers
Earth rotates on is axis approximately once every 24 hours, causing the day to night cycle and?
katovenus [111]
Yes this is true this causes day and night
6 0
3 years ago
Jamison turns around 5 times
Ghella [55]

Answer:

UMMMMMMMMMMMMMMM ]

Explanation:

WHAT

8 0
3 years ago
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A ruby laser delivers a 16.0-ns pulse of 4.20-MW average power. If the photons have a wavelength of 694.3 nm, how many are conta
stepan [7]

Answer:

The  value is  n  =  2.347 *10^{17} \  photons

Explanation:

From the question we are told that

     The  amount of power delivered is  P  =  4.20 \  M W  =  4.20  *10^{6} \  W

      The  time taken is  t =  16.0ns  =  16.0 *10^{-9} \  s

       The  wavelength is  \lambda  =  694.3 \  nm =  694.3 *10^{-9} \  m

     

Generally the energy delivered is  mathematically represented as

     E  =  P  * t  =  \frac{n  *  h  *  c  }{\lambda }

Where  h is the Planck's constant with value  h  =  6.262  *10^{-34} \  J \cdot  s

           c  is the speed of light with value  c =  3.0*10^{8} \  m/s

     

So  

    4.20 *10^{6}  *  16*10^{-9}=  \frac{n  *  6.626 *10^{-34}  *  3.0*10^{8}  }{694.3 *10^{-9}}

=>    n  =  2.347 *10^{17} \  photons

4 0
3 years ago
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