Wednesday
August 20, 2014

Homework Help: astronomy

Posted by keitanako on Wednesday, May 14, 2014 at 7:54am.

Hydrogen accounts for 71% of the Sun's mass today. If only one tenth of that Hydrogen burns into Helium, how long could the Sun keep shining at its present luminosity? Note that Hydrogen fusion has an efficiency of about 0.7%

Time in years:

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Astronomy - Mass of the Sun = 1.989 x 10^30 kg Mass of Hydrogen Atom = 1.00794 ...
Astronomy - If we assume the Sun is made totally out of hydrogen, how many ...
physics - In the Sun, an ionized helium atom makes a transition from n =6 state ...
natural science - what gas does the sun burn? Thank you for using the Jiskha ...
physics - How much energy is produced when the sun converts one kg of hydrogen ...
physics - Sun will turn into a red giant star one day. Today the sun has a mass ...
Astronomy - Orbital speed is the speed with which a planet moves around the sun...
Astronomy - When the Sun ends up as a white dwarf, billions of years from now, ...
physics-sun - a 1 square meter solar panel receives a total of 1000Watts from ...
Astronomy - One possible energy source for the mysterious object you've just ...

Search
Members