<span>-The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system.
-</span><span>The second law of thermodynamics states that the entropy of any isolated system always increases.
-</span><span>The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero.</span>
If there is no friction, then NO force is needed to keep an object moving. Go back and look at Newton's first law of motion again.
Answer:
a = (v₃₂ - v₂₁) / (t₃₂ -t₂₁)
Explanation:
This is an exercise of average speed, which is defined with the variation of the distance in the unit of time
v = (y₃ - y₂) / (t₃-t₂)
the midpoint of a magnitude is the sum of the magnitude between 2
t_mid = (t₂ + t₃) / 2
the same reasoning is used for the mean acceleration
a = (v_f - v₀) / (t_f - t₀)
in our case
a = (v₃₂ - v₂₁) / (t₃₂ -t₂₁)
They all have the same aphelion distances
Answer:
These electrons are "bonding pairs."
Explanation:
Two atoms share a pair of two valence electrons between them to form a covalent bond. (Of course they can share more than one pairs to produce a double, or a triple bond.) These valence electrons are called "bonding pairs."
In contrast, if a pair of valence electrons on an atom are not shared with another atom, that pair of valence electrons is called a "lone pair".