We use a spectrometer to help us determine what stars and planets are made of by passing a light through various chemical elements, different spectral patterns are created. By matching those patterns up to patterns generated in a laboratory environment we can tell what the composition of a distant star or planet is.
Answer:
(a) V = 36 v
(b) V = 18v
Explanation:
Check the attached file for the explanation
<span>so I'm pretty sure that the answer is 92.70808 g/mol</span>
Gravity pulling it down or the air cd (carbon dioxide)
F=ma
40=0.5m
m=40/0.5
m=80kg
The answr is b
