3. Momentum describes A. How much force is needed to change an object's motion
B. How much velocity changes in a given amount of time
C. The tendency of an object to resist a change in motion
D. The balanced forces on a falling object with a constant speed

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

beta is electron from nucleus

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