Answer:
<h3>The answer is 9 kg</h3>Explanation:
To find the mass given the force and acceleration we use the formula
where
f is the force
a is the acceleration
We have
f = 18 N
a = 2 m/s²
We have
We have the final answer as
<h3>9 kg</h3>Hope this helps you
Highest energy photon absorbed:
Explanation:
An atom is said to be (positively) ionised when it absorbs a photon, and as a consequence, an electron becomes energetic enough to escape the atom, leaving an excess of positive charge behind.
In order for the electron to escape, the energy of the absorbed photon must be exactly equal to the (negative) energy of the level in which the electron lies.
For an hydrogen atom, the energy levels are given by
where this energy is measured in electronvolts, and n is the number of the energy level.
Since the energy is negative, this means that the electron which requires most energy is the one lying in the ground state (n=1). Therefore, for an electron in the ground state, the most energy that can be absorbed from the incoming photon is
Converting into Joules, this is equal to
Learn more about hydrogen atom:
#LearnwithBrainly
Hope this helps
Ps- U can pick between these two pictures
Please mark as brainliest
