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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After looking at your question, I reasoned you were writing this in python. Here's my code, I hope it helps!
while True:
v1 = input("Enter value of first variable (T/F) ")
v2 = input("Enter value of second variable (T/F) ")
v3 = input("Enter value of third variable (T/F) ")
print("v1: {}, v2: {}, v3: {} = T".format(v1, v2, v3) if v1 == "T" and v2 == "T" or v1 == "T" and v3 == "T" else "v1: {}, v2: {}, v3: {} = F".format(v1, v2, v3))
Answer:
D
Explanation:
because it is a sequence it does more than one thing
3-database of new clients
Answer:
Columns
Explanation:
A spreadsheet may a explained as a tabular arrangement or arrays of cells which allows users to enter both numeric and string data for storage, manipulation and analysis. The spreadsheet program has both the vertical and horizontal cell arrangement with the vertical areas being reffered to as THE COLUMN which are labeled using alphabets arranged from A - AZ, AA - AZ, and so on to make up a total of 16384 columns on the Microsoft Excel spreadsheet program. Cells are located using a combination of column and row address. With row representing the horizontal area of the spreadsheet and labeled with digits. Therefore cells are usually refereed to as A1, (column A row 1) and so on.
