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 4: Value-returning
Explanation:
In programming, a method is a named section of codes that perform a specific task. This is possible to define a method that return a value after performing its task. This type of method is known as Value-returning method.
For example, we can define a method addition that takes two inputs, x, y and return the summation of x + y to the code that called it. The codes are as follows:
- public static void main(String[] args) {
- int sum = addition(3, 5);
- }
-
- public static int addition(int x, int y){
- return x + y;
- }
Answer:
The answer to this question is Java,C++.
Explanation:
We can assign non static final variables a value with the declaration or in the constructor but this is not the case with c++ because we have to assign value during declaration and c++ equivalent of final is const keyword and there is sealed or readonly keywords in c# not final.If we do not assign value at the time of declaration the const variable will contain garbage value which cannot be changed afterwards.
Answer: For the first dot you can I want a playground in my community
Make homework easier I dont know foor the other two
Explanation:
Multics was the first operating system to integrate security as its core functions.
