If when you look at them there pupils grow in size
Answer:
The electric force is conservative.
Since
ΔK = −ΔU,
Kf − Ki =Ui −Uf.
We have,
Kf = 0
Ui = 0.
Thus Ki =Uf.
<u>so ,at 10 fm Uf = (2×10)−12 J.</u>
Answer:
Explanation:
Equilibrium reactions are reversible reactions.
The general expression for equlibrium reactions is:
Which means that A produces B and B produces A. Those are two reactions:
- Direct or forward reaction: A → B (the arrow points from left to the right)
- Reverse reaction: A ← B (the arrow points from right to left).
So, in the direct reaction A is the reactant and B is the product, and in the reverse reaction A is the product and B is the reactant.
When you start with only A, only A is reacting and since the rate of reaction is proportional to the concentration of the reactants the rate of the direct reaction is high. As the reaction proceeds B appears and the concentration of A decreases, so the rate of the direct reaction decreases and the rate of the reverse reaction increases. At some moment the rate of both direct and reverse reactions are equal and the dynamic chemical equilibrium is reached.
Answer:
As the molecules of a liquid are cooled they slow down. As the molecules slow down they take up less volume. Taking up less room because of the molecules lower energy causes the liquid to contract.
Explanation:
Cellular respiration is the reverse of photosynthesis because it is glucose + oxygen yield carbon dioxide water and ATP while photosynthesis is carbon + water yields oxygen and glucose. Cellular respiration is the way cells gain energy from the sun. Photosynthesis is the plants way of producing energy and these processes are basically the reverse of the other .