Models of the sun indicate that only about 10% of the total hydrogen in the sun will participate in nuclear reactions, since it is only the hydrogen in the central regions that is at a high enough temperature. use the total energy radiated per second by the sun, 3.8 × 1026 watts, alongside the exercises and information given here to estimate the lifetime of the sun. (hint: make sure you keep track of the units: if the luminosity is the energy radiated per second, your answer will also be in seconds. you should convert the answer to something more meaningful, such as years.)

u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )

what is the actual question though?

the rearrangement of particles in a physical change. hope this