[Answered] Henrietta Leavitt discovered the period-luminosity relationship for ___________________

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Author Question: Henrietta Leavitt discovered the period-luminosity relationship for ____________________. Fill in ... (Read 31 times)

jessicacav

Hero Member
Posts: 558

on: Jul 27, 2018

Henrietta Leavitt discovered the period-luminosity relationship for ___________________ _.

Fill in the blank(s) with correct word

Question 2

As a star begin to form the initial energy source is from

a. nuclear fusion.
b. nuclear fission.
c. gravitational potential energy.
d. magnetic fields.

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Marked as best answer by a Subject Expert

Ksanderson1296

Sr. Member
Posts: 339

Reply #1 on: Jul 27, 2018

Answer to Question 1

Cepheid variables

Answer to Question 2

c

jessicacav

Member
Posts: 558

Reply 2 on: Jul 27, 2018

Wow, this really help

helenmarkerine

Member
Posts: 324

Reply 3 on: Yesterday

Excellent

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