Answer:
Melting and frezzing are physical changes
Answer:
If iron, nickle, or cobalt is an answer choice, those are the three metals that are purely magnetic.
Green would be the colour of the paper
Answer:
3. both are true.
Explanation:
Energy increses with decrease in wavelenght.
For photoemission to occur, a threshold energy barrier must be broken.
Higher energy means more electrons will be emmited.
The electrons emmited will posses energy that is less than the incident energy by the value of the threshold energy.
So the higher the energy, the higher the energy possessed by the electrons.
Answer:
<u><em>note:</em></u>
<u><em>find the attached solution:</em></u>
