Thursday

December 18, 2014

December 18, 2014

Posted by **jen** on Monday, May 9, 2011 at 12:07am.

- physics-sun -
**drwls**, Monday, May 9, 2011 at 12:34amTo get the total output of the sun, multiply your 1000 W/m^2 by the area of a sphere centered at the sun at Earth's distance, R. That area is 4 pi R^2. Now you will have the power emitted by the sun.

Next, look up the mass of the sun. Assume 1/9 of the mass is hydrogen abnd 8/9 of the mass in oxygen. These ae stoichiometric proportions. Calculate the chemical energy available if it all turns into H2O.

Divide that energy by the known energy release rate of the sun, from the first part. That will give you the time that the hydrogen and oxygen can last.

**Answer this Question**

**Related Questions**

physics - I keep getting the wrong answer... A solar model is used to calculate ...

Physics pls anyone can help me? its urgent - When the sun is in the zenith and ...

Physics pls anyone can help me? its urgent - When the sun is in the zenith and ...

physics - The sun is 1.5 1011 m from the earth. (a) Over what surface area is ...

Trigonometry - Find the value of x on this right triangle when a=20 b=5x-10 and ...

Math - Trigonometry - Find the value of x on this right triangle when a=20 b=5x-...

Math - Trigonometry - Find the value of x on this right triangle when a=20 b=5x-...

Physics - A solar panel (an assemblage of solar cells) measures 58 cm x 53 cm. ...

science - what type of spectrum does the sun emit? where does nuclear fusion in ...

science - The total power output of the Sun is about 3.8 × 1026 W, and the power...