Answer:Shifted towards Left by distance of 2.243 m
Explanation:
Given
Mass of john 
Mass of barbara 
John is standing at 
Barbara is standing at 
Now if they change their Position then
Thus we can see that center of mass shifted towards left by a distance of 
because heavier is shifted towards left
Work is performed while initially lifting books off the floor. The work is due to gravity.
Answer:
water vapor is a type of gas
Explanation:
all gas are in air state of form
hope this helps
Full Question:
Why do we use other bonding theories in addition to the lewis model?
a) Lewis model is not suitable for all molecules or ions. b) Lewis model cannot predict all of the properties of a molecule or ion. c) Lewis model is too complicated.
Answer:
b) Lewis model cannot predict all of the properties of a molecule or ion.
Explanation:
Lewis structures, also called electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.
Lweis model does not explain the geometry of molecules, how the bonds form, or how the electrons are shared between the atoms hence the need to use other bonding theories.
