in the first video for chapter 29, we looked at the emission spectrum of excited gases. in this video, we look at the spectrum of colored filters.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !

pe = weightxheight = 2000x1000=2,000,000joules

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge