True, RR Lyrae stars pulsate, but with shorter periods and lower luminosities than Cepheids.
The pulsation periods of the fundamental-mode RR Lyrae stars range from about 0.3 to 1.0 days (Population II pulsators with longer periods are categorized as type II Cepheids), but the vast majority of them have generations longer than 0.45 days.
<h3>Why do RR Lyrae stars pulsate?</h3>
RR Lyrae stars pulse like Cepheid variables, but the nature and histories of these stars is thought to be rather different. Like all variables on the Cepheid fluctuation strip, pulsations are caused by the κ-mechanism, when the ambiguity of ionised helium varies with its temperature.
To learn more about RR Lyrae, refer
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Answer:
Option D. Persuasive writing style
is correct answer.
Explanation:
- Alice should adopt the persuasive writing style as she wants to convince the people to adopt eco-friendly methods of living.
- When a person write persuasively, this means he/she will present justifications and reasons for that specific opinion he/she is trying to convince the audience.
- For the correctness of their opinion, different kinds of evidences are prepared so that the fact persuade the reader.
- Persuasive writing is used widely while writing academic papers, advertisements and argumentative essays as well.
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i hope it will help you!</h2>
Answer:
Identity Theft
Explanation:
Identity theft is the act of someone who obtains details about someone else illegally. This is done to find personal and financial information such name, address,social security number, passwords, and credit card number, phone number, e-mail, etc. Then the hacker can use this information to control bank accounts, e-mails, computers, portray himself as you are, or sell information to someone else.
The activity that uses a feature of a word processor is the last given answer. Recreating the same document multiple times to print multiple copies. Although some word processors have all the features stated above now a days. Word processors are helpful in composing, editing and printing text documents.
Answer:I love Python, very useful
Explanation:python is very easy and user friendly!