1.Light-collecting area
2.Angular resolution
<span>The four stages of listening include hearing, understanding, "Evaluating" and responding.
Hope this helps!</span>
Answer:
I am going to guess it shows that the balloon is going downwards because the speed of rise is in the negatives for the last 2.
1.) equal volume of different substances have "different" masses.
2.)The more closely packed arrangement the particles of a substance have, "increases" its density.
3.)the SI unit of power is "Watts".
4.)an iron nail sinks in water but floats on " mercury ".
5.)balloons used for advertisements are filled with " helium" gas.
6.)"Conduction" is the primary mode of heat transfer in liquid and gases.
I hope this helps you...
