Answer:
vo = 0.175m/s
a = -0.040625 m/s^2
Explanation:
To solve this problem, you will need to use the equations for constant acceleration motion:
In the first equation you relate final position with the time elapsed, in the second one, you relate final velocity at any given position. In both equations, you will have both the acceleration a and the initial velocity vo as variables. We can simplify with the information we have:
1. 
2. 
Replacing in the first equation:
But as you are told that the ball was projected om the air track, it only makes sense for the velocity to be positive, otherwise it would have started moving outside the air track, so the real solution is 0.175m/s. Then, the acceleration would be:
Answer: The first one
Explanation:
Because it’s the higher frequency
Answer:
Negatively charged particles (electrons)
Explanation:
Plastic rod is charged -15.0 nC. It is clear that the charge on the rod is negative so the rod has gain excess of electrons.
When the rod touches a metal sphere charge on the plastic rod remains -10 nC, i.e. negative charge on the rod decreases. This is because negatively charged particles (electrons) are transferred from the plastic rod to the metal sphere.
The correct statement for reversible reactions that reach dynamic equilibrium is option C "the rates of the forward reaction is equal to the rate of backward reactions at equilibrium."
<h3>What is dynamic equilibrium?</h3>
The dynamic equilibrium is defined as a state of a particular system wherein the reversible reaction takes place and ceases modifying the ratio of reactants as well as products.
The chemical reaction is a method for creating novel chemicals with unique features.
The correct statement for reversible reactions that reach dynamic equilibrium is option C "the rates of the forward reaction is equal to the rate of backward reactions at equilibrium."
Therefore, the correct answer will be an option (C).
To know more about reaction and dynamic equilibrium
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ANSWER: B
Exothermic always RELEASES heat, energy, or light
Endothermic TAKES IN/ ABSORBS heat, energy, or light
