Answer:
(c) 6.91x10^14 Hz
Explanation:
Find the level energy of n=2 and n=5, using the formula:

where 


To jump from n=2 to n=5 the electron absorbs a photon with energy equal to
, using the next formula to find specific wavelength
to that energy

Where
is the speed of light (
) and
is Planck's constant (
). Solve for
:

The frequency of this wavelength is calculated with this formula:


Answer:
c. I-O psychology.
Explanation:
According to my research on the different types of psychology fields, I can say that based on the information provided within the question he should consider studying I-O psychology. This is Industrial-Organizational Psychology and focuses on using psychology principles to solve problems in the workplace as well as improving workplace environments. Which is what Stefan would be interested in.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Answer:
The acceleration of the skateboarder is 2.067 m/s²
Explanation:
Given;
initial velocity of the skateboarder, u = 0.8 m/s
final velocity of the skateboarder, v = 7 m/s
time of motion, t = 3 s
The acceleration of the skateboarder is given as;

Therefore, the acceleration of the skateboarder is 2.067 m/s²
Travis Scott!3&;8284$28&:!;&29395