The kinetic energy of the air travelling at 20m/s, which passes through
the circular area in 1 second is 5.4 x 10⁵ J.
What is kinetic energy?
The kinetic energy of an object is associated with its motion. It can be related to the mass and velocity as
K.E = 1/2 mv²
Given the wind is blowing directly towards the wind turbine at a speed of 20 m/s. At this wind speed, 7500 kg of air passes every second through the circular area swept out by the blades.
Substitute the values, we have
K.E = 1/2 x 7500 x (20)²
K.E = 15 x 10⁵ J
Hence, the kinetic energy of the air travelling at 20m/s, which passes through the circular area is 15 x 10⁵ J.
To know more about kinetic energy, refer: brainly.com/question/12669551
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<u><em>[NOTE: THIS IS AN INCOMPLETE QUESTION. THE CMPLETE QUESTION IS: the wind is blowing directly towards the wind turbine at a speed of 12 m/s. at this wind speed, 7500 kg of air passes every second through the circular area swept out by the blades. Calculate the kinetic energy of the air travelling at 12m/s, which passes through the circular area in 1 second.]</em></u>
The correct answers are "candidates with high polling numbers get more media coverage" and "undecided voters vote for the most popular candidates."
The two ways elections are affected by public opinion polls are: "candidates with high polling numbers get more media coverage" and "undecided voters vote for the most popular candidates."
The method that is used to measure public opinion in the United States is polls and surveys. Mass Media outlets such as TV and Radio stations used polls and surveys before and during election time. The same happens with political parties and the candidates' campaign team. They are always monitoring the voters' preferences regarding their political candidates. They like to take "the pulse" of voters to know their preferences.
During political campaigns, public opinion polls help the campaign team to know people's views regarding their position of the candidate or the political party, It could be in favor, against, or neutral. From that information, the Director of the campaign can make decisions about what to modify the messages, the public's preferences, the position of the rivals, and try to better position its candidate in the mind of the voter.
Judaism is the first religion to believe about the only god... The famous prophet Abraham taught about it 1800BC. The difference between Judaism and Christianity would be the thought of Jesus christ as the son of the lord and he died on the cross for our sins. The Jews don't believe this happened.....
