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sladkih [1.3K]
3 years ago
11

Describe the relative energy of the electrons in the shells of a calcium atom

Physics
1 answer:
Elina [12.6K]3 years ago
5 0

Answer:

An electron in the third shell has more energy than an electron in the second shell and An electron in the first shell has more energy than an electron in the second shell.

Explanation:

  1. Calcium has 20 electrons.
  2. Calcium does not "borrow" electrons. Calcium "donates" 2 electrons.
  3. Calcium ion (Ca2+) has 18 electron
  4. Calcium has 2 valence electrons.
  5. The element Ca, so calcium, has 20 electrons (so it also has 20 protons) this means that it has 2 electrons in its outer orbit, its relative atomic mass is 40.

 

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Work done can be describe as?​
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Explanation:

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Quick Facts: Common symbols, SI unit ...

Work

A baseball pitcher does positive work on the ball by applying a force to it over the distance it moves while in his grip.

Common symbols

W

SI unit

joule (J)

Other units

Foot-pound, Erg

In SI base units

1 kg⋅m2⋅s−2

Derivations from

other quantities

W = F ⋅ s

W = τ θ

Dimension

M L2 T−2

Close

For example, when a ball is held above the ground and then dropped, the work done by the gravitational force on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). When the force F is constant and the angle between the force and the displacement s is θ, then the work done is given by:

{\displaystyle W=Fs\cos {\theta }}{\displaystyle W=Fs\cos {\theta }}

Work is a scalar quantity, so it has only magnitude and no direction. Work transfers energy from one place to another, or one form to another. The SI unit of work is the joule (J), the same unit as for energy.

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3 years ago
Which of the following is an example of acceleration?
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B) a leaf blown from a tree by the wind

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Why don't the planets move exactly along the ecliptic?
AVprozaik [17]
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Answer:

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= 0.01*10^-22kgm/s

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