it is violet , because it has the highest energy and fastest oscillation .
Answer:
W = 0
Explanation:
As the satellite moves in a circle the force is perpendicular to the path, therefore the work that is defined by
W = F. r = f r cos θ
Since the force and the radius are perpendicular, the angle θ = 90º and the cosine 90 = 0, therefore there is no work for the circular motion.
W = 0
When you increase the frequency of the waves (assuming amplitude is held constant), the energy of the waves will increase, while wavelength will decrease.. Increase the frequency the light goes toward violet, decrease it and it goes toward red.
In order to compare the two temperatures, we need to convert 20°F into Celsius. The formula we need to use is:

Substituting 20°F, we find

And this is less than 0°C, so the answer is
20°F is colder than 0°C.
To solve this problem it is necessary to apply the concepts related to pressure as a unit that measures the force applied in a specific area as well as pressure as a measurement of the density of the liquid to which it is subjected, its depth and the respective gravity.
The two definitions of pressure can be enclosed under the following equations

Where
F= Force
A = Area

Where,
Density
g = Gravity
h = Height
Our values are given as,


If we make a comparison between the lid and the tube, the diameter of the tube becomes negligible.
Matching the two previous expressions we have to

Re-arrange to find h




Therefore the height of water in the tube is 7.9cm