Finding loss of sun's mass given the energy density delivered.

  • Thread starter texan14
  • Start date
  • #1
7
0

Homework Statement



The energy density (energy per unit area per unit time) arriving from the sun at the surface of the earth is 1300 J/m2s. Calculate the mass loss of the sun in one year. (The earth is about 1.49 x 1011 m from the sun.)

Homework Equations



ΔE = Δmc2

KE = (γ-1)mc2

The Attempt at a Solution



I'm not sure how to calculate the loss of energy density from the sun as a function of distance. I feel like it can't be as easy as plugging the energy into E=mc2
 

Answers and Replies

  • #2
vela
Staff Emeritus
Science Advisor
Homework Helper
Education Advisor
15,045
1,629
Hint: You're not given an energy; you're given an energy density.
 

Related Threads on Finding loss of sun's mass given the energy density delivered.

Replies
1
Views
1K
Replies
8
Views
611
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
4
Views
647
Replies
3
Views
1K
  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
6
Views
2K
Replies
3
Views
581
Top