is the potential energy of the ball as it is half way through the fall, 20 meters high
<u>Explanation:</u>
Given data:
Height of the fall = 20 m
Given that the body is half-way through the fall, it is at above the ground 10 m
We need to find its potential energy (P.E)
Energy due to the body’s position is referred as potential energy. It means the energy when body is at rest. It can be expressed as below,
Where
m – The body’s mass
g - Acceleration due to gravity
h - Height of the body
By substituting the given values, we get
Since the mass is not provided, just kept it.
Scandium Z= 21 has an electronic configuration of 1s²2s²2p⁶3s²3p⁶3d¹4s².
This shows that Scandium has 21 electrons with three outermost or valency electrons. It is a d-block elements whose valence electrons are equal to their group number, which is equal to the number of electrons in the valence shell.
Answer:The law of superposition is an axiom that forms one of the bases of the sciences of geology, archaeology, and other fields dealing with geological stratigraphy
Answer: The hydrogen ion concentration in molarity is 0.013
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pOH is calculated by taking negative logarithm of hydroxide ion concentration and pH is calculated by taking negative logarithm of hydrogen ion concentration
Putting in the values:
Now ,
The hydrogen ion concentration in molarity is 0.013
For the answer to the question above, t<span>he energy that is required to break all the carbon-hydrogen bonds in methane is 891 kJ/mol. In 0.1 mol of methane, you would need 89.1 kJ.
I hope my answer helped you. Have a nice day</span>