FNet = Fa + Fg. Is the formula. I think the 20 should be right
Answer: Wind energy is powered by wind, and solar energy is powered by the Sun.
Answer:
Relatively small part of the electromagnetic spectrum
Explanation:
Let us take a look at the electromagnetic spectrum
Radio waves
Wavelength = 
Microwaves
Wavelength = 
Infrared waves
Wavelength = 
Visible waves
Wavelength = 
Radio waves
Wavelength =
Ultraviolet waves
Wavelength = 
X ray waves
Wavelength = 
Gamma ray waves
Wavelength = 
So, it can be seen that the visible light makes up a relatively small part of the electromagnetic spectrum.
Rotational motion occurs when an object spins around an axis without alternating its linear position.
hope this helped :)
Evaporation and boiling.
Evaporation refers to only the surface level turning it into a gas and the vaporization pressure of the liquid remains low.
When a substance boils it’s pressure is high and the surface evaporated along with the rest of the liquid at an equal rate. A sign of boiling is the presence of bubbles, which occur only in the process of boiling and not in evaporation.
A example of boiling is heating water up to the point until you see steam and bubbles.
A example of evaporation is the melting of an ice cube.
Hope this helps
