place the pressure gauge near the bottom of the tank. use the faucet and the drain to change water level, observe and record how the pressure gauge reading changes according to the water level qualitatively

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:

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

not moving. pos accel,

answer; how far out of place which the object finished relative to the starting location;