Answer:
I Think its ABC
Explanation:
No air is the lightest
Helium is lighter than regular air that's why it goes up so then the regular air would be heaviest.
Answer:
1945.6 W
Explanation:
We are given that
Height,h=1100 m
Time,t=37.5 min=
1 min=60 s
Mass,m=65 kg
Power,P=700 W
We have to find the his total metabolic power.
Power,=
Where 
Efficiency =25%
Therefore,Power,P'=
Total metabolic power=P+P'=700+1245.6=1945.6 W
Other than for the chemical symbol, the electron dot diagram for silicon would be the same as it was for carbon.
The reason for this is because electron dot diagrams are used to represent the electrons in the outermost, or valence, shell of an atom. In a group of the periodic table, all of the elements have the same number of valence shell electrons. This means that all elements belonging to the same group have the same electron dot diagram, except for the symbol of the element that is within the diagram.
Answer:
biomass, geothermal, hydropower, solar, and wind.
hope this helped!
Answer:
Green, blue, indigo and violet.
Explanation:
The velocity of a wave is given by

where
f = Frequency = 
= Wavelength

The wavelength of the wave is 550.459 nm
Green light has wavelength which ranges from 500-565 nm.
So, the light which observed is green light and lower in wavelength than green light i.e., green, blue, indigo and violet.