2 years ago

What are did facts about atomic number 20?

Chemistry

1 answer:

stira [4]2 years ago

3 0

<span></span>Basic Calcium Facts

Name: Calcium

Atomic Number: 20

Element Symbol: Ca

Group: 2

Period: 4

Block: s

Element Family: Alkaline Earth

Atomic Mass: 40.078(4)

Electron Configuration: [Ar]4s<span>2
</span>

Full: 1s22s22p63s23p64s2 (full)

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Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block.

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The kinetic energy formula is;

$KE=\frac{m.v^2}{2}$

The variable $m$ represents the mass. Its unit is kilogram. We are informed that the mass of the object is $15kg$ . The variable $v$ represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is $20m/s$ . Let's find the kinetic energy of the object by substituting these values in the formula.