The 2 indicates the amount of hydrogen there is. In this case there are two atoms of hydrogen. The subscript will correspond to the “letter” (element symbol) right before it.
Answer: sorry but thank you
Explanation:
Here you need to draw a force system.
The car is the center and you have mainly two forces: velocity and gravity.
The angle they ask you for is the same angle formed by the velocity (mass* acceleration) and the gravity (mass*gravity)
And to know the angle you need to do the tangent.
Tg∡=![\frac{m*3m/s^{2} }{m*9.81m/s2}](https://tex.z-dn.net/?f=%5Cfrac%7Bm%2A3m%2Fs%5E%7B2%7D%20%7D%7Bm%2A9.81m%2Fs2%7D)
Both masses canceld and
Tg∡=![\frac{3m/s^{2} }{9.81m/s2}](https://tex.z-dn.net/?f=%5Cfrac%7B3m%2Fs%5E%7B2%7D%20%7D%7B9.81m%2Fs2%7D)
∡=arcTg 0.30
∡=187.35°
The answer for the first one is the second option.
The answer for the second one is the last option.
Hope this helped and have a nice day : )
Answer:
D
Explanation:carbon dioxide plz mark brainliest