Explanation:
Blue or violet light has the shortest wavelength. White light is a combination of all colors in the color spectrum.
D.) Rain falls from the sky.
Because air and water have different density.
Air is less dense than water.
So, the light will bend towards normal.
Thus, the angle of refraction is smaller than angle of incidence.
This phenomena is known as refraction.
Answer:
Work = 2943 J
Explanation:
So first you want to figure out what you have and what you need (CONVERT TO THE BASIC UNITS TOO!!)
you have:
Mass = 300g = 30.0 Kg
Distance or displacement across y axis: 20m, but since it is only till the half mark you want to use 10m
Now you need to figure out what you need. the equation for work is Work = Force x Distance or displacement
what you need is the force of gravity so the equation that you tecnically need is Work of gravity = force of gravity x distance
to find the force of gravity you need to use the equation force = mass x acceleration or force of gravity (Fg)= mass x acceleration of gravity (Ag).
so...
Fg = M x Ag
Fg = 30 x 9.81
Fg = 294.3 N
Now you can plug in what you have to the Work equation
W = F x D
W = 294.3 N x 10 m
W = 2943 J
I hope this helps!
Please tell me if I'm incorrect anywhere.
