The time a protostar takes to contract from a cool interstellar gas cloud to a main-sequence star ...

Author Question: The time a protostar takes to contract from a cool interstellar gas cloud to a main-sequence star ... (Read 27 times)

james0929

Hero Member
Posts: 586

on: Jul 27, 2018

The time a protostar takes to contract from a cool interstellar gas cloud to a main-sequence star depends on its _____.

A) volume
B) luminosity
C) mass
D) temperature

Question 2

_____ say that certain things cannot be created out of nothing or vanish into nothing.

A) Conservation laws
B) Laws of kinematics
C) Laws of planetary motion
D) Illuminance laws

lolol

Sr. Member
Posts: 330

Reply #1 on: Jul 27, 2018

Answer to Question 1

C

Answer to Question 2

A

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