Answer:
sorry don't know the answer but i really need the points sorry
Explanation:
Answer:
open system
Coffee held in a cup is an open system because it can exchange matter water vapors and energy heat with the surroundings.
The frequency of the radiation is equal to
Hertz.
<u>Given the following data:</u>
- Photon energy =
Joules
To find the frequency of this radiation, we would use the Planck-Einstein equation.
Mathematically, the Planck-Einstein relation is given by the formula:

<u>Where:</u>
Substituting the given parameters into the formula, we have;

Frequency, F =
Hertz
Read more: brainly.com/question/16901506