Answer: 
Explanation:
Using Weins displacement law:
where 
= wavelength = 
b = constant =
T = Temperature in Kelvin = ?
Putting the values we get:
Thus the temperature of the blackbody will be
Hey sorry to hear that but you’re still going there for the last few
The statements that hold true regarding the undefinable terms in geometry include,
- A point’s location on the coordinate plane is indicated by an ordered pair, (x, y).
- A plane consists of an infinite set of points.
Therefore, the options A and E hold true.
<h3>What is the significance of geometry?</h3>
In the study of geometry, a point, which contains a coordinated plane, is indicated with the help of variables. Geometry also recommends that a plane consists of infinite set of point, and there is no limit on the number of lines that can pass through a point on the plane.
Therefore, the options A and E hold true and state regarding the significance of geometry.
Learn more about geometry here:
brainly.com/question/13459927
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Answer: In Medieval Europe, knights pledged loyalty to vassals, who in turn pledged theirs to powerful lords, and serfs labored in the fields.
Explanation:
A rigid hierarchy refers to one where people who are born into a certain position in life, find it quite hard to move from it or rather one where there are different social classes and people had to be classified in one class for the system to work.
The system during medieval times was much like this. Social classes existed that determined a person's worth in society such as the knights, vassals, Lords and Royals. There was also the serfs who were considered the lowest in the hierarchy.
