I think water vapour is the most important gas for understanding atmospheric processes.
correct me if i am wrong....... :)
<span>Air has mass and density. Yes, cold air is heavier than warm
air. Cold air sinks because it is denser compared to warm air. On the other hand, warm air rises because it
is lighter. </span>
When the air is hot or warm, its molecules are much further
when it’s cold, its molecules are slightly packed closer which is why it moves
slower.
<span>
The best association to this is the hot air balloon. Hot air balloons fly because they are filled
with hot air. Hot air is lighter than the cold air outside because when it is
heated up, it expands making it lighter.</span>
The structure of an atom is in the middle of an atom has the neutron (nucleus) which has no charge around the neutron is the protons which has a positive charge and the ones that orbit around the atom is the electrons which has a negative charge in it. The number of protons is call the Atomic Number. Protons have a relative charge of +1 and the electron have a relative charge of -1.
Answer:
Work done, W = 0.0219 J
Explanation:
Given that,
Force constant of the spring, k = 290 N/m
Compression in the spring, x = 12.3 mm = 0.0123 m
We need to find the work done to compress a spring. The work done in this way is given by :
W = 0.0219 J
So, the work done by the spring is 0.0219 joules. Hence, this is the required solution.
Answer:
A. (-8,-5)
Explanation:
If you fill in A you get
-5 + 5 = 2(-8+ 8)
0 = 0
So this point is on the line
