With that information you can sketch the energy of the reaction as it progresses.
You can find the sketch in the pdf file attached.
You will see that the reactants start at a certaing energy level, that level increases in 75 kJ/mol, which is the activation energy.
The intermediate products are 75kJ/mol above the energy level of the reactants.
Given that the reaction is exhotermic. The reaction will release a net heat and the products will be at a lower energy level than the reactants, which is shown by the fact that the products are placed below the level of the reactants.
It is because of momentum. Velocity can change if an object changes direction since velocity depends on both the speed and direction
For this case we have that a paper clip is a very small object, to be taken in the hand we feel that its mass is very small, almost imperceptible.
For this reason we can discard option D and option A.
Being so small we can use the milligrams to measure its mass, it is the smallest scale.
Answer:
Option B
Answer:
The rider's speed will be approximately 35 m/s
Explanation:
Initially the rider has kinetic and potential energy, and after going down the hill, some of the potencial energy turns into kinetic energy. So using the conservation of energy, we have that:
The kinetic and potencial energy are given by:
So we have that:
So the rider's speed will be approximately 35 m/s
