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Vladimir79 [104]
2 years ago
5

Why are there only two elements in the first period of the periodic table?(1 point)

Physics
1 answer:
Katen [24]2 years ago
6 0

Answer:

because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits

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A tall tree has more chances to break during the strom why?​
S_A_V [24]

Explanation:

Trees, because of their height, are natural lightning rods. Electricity seeks the path of least resistance, and the moisture inside a tree is a much better conductor than air. This means a tree provides the preferred path for lightning to reach the ground.

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The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. Which comparison is best supported by this
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Explanation: On Edgenuity!!

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A 500 kg motorcycle accelerates at a rate of 2 m/s .how much force was applied to the motorcycle?
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In an RC circuit, what fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for
4vir4ik [10]

Answer:

The  fraction fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for 3.0 time constants is  

      k  = 0.903

Explanation:

From the question we are told that

     The time  constant  \tau  =  3

The potential across the capacitor can be mathematically represented as

     V  =  V_o  (1 -  e^{- \tau})

Where V_o is the voltage of the capacitor when it is fully charged

    So   at  \tau  =  3

     V  =  V_o  (1 -  e^{- 3})

     V  =  0.950213 V_o

   Generally energy stored in a capacitor is mathematically represented as

             E = \frac{1}{2 } * C  * V ^2

In this equation the energy stored is directly proportional to the the square of the potential across the capacitor

Now  since capacitance is  constant  at  \tau  =  3

        The  energy stored can be evaluated at as

         V^2 =  (0.950213 V_o )^2

       V^2 =  0.903  V_o ^2

Hence the fraction of the energy stored in an initially uncharged capacitor is  

      k  = 0.903

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3 years ago
Do any of the atom diagrams below represent atoms of the same element?
sergeinik [125]

Atom A and atom C are the same element.

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2 years ago
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