3. Three people are carrying a piano upstairs. one pushes with 600 N of force, another with 500 N and the third with 400 N. If gravity opposes them at 1200 N, what is the net force.

asthenosphere and convection

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

: )

multiply 2kg by latent heat of vap