Answer:
Explanation:
Consider that F (any function) <0 .
u(x,y) is a coontinuous function in the closed interval or region R.
Let us consider a point (p,q) that is inside the region and it is a maximum point.
Then it should be must
uxx (p,q) <0 where uxx means double differentiation
and uy(p,q) >0
Since ux(p,q) = 0 = uy(p,q) where ux and uy means single differentiation with respect to x and y respectively.
Say, Maximum limits of the region is T
therefore q<T
then uy (p,q) = 0 if q<T
if q = T then
point (p,q) = (p,T) will be on the boundary of R then we claim that
uy(p,q) >0
Similarly for the minimum also it will work
Answer:
se elevator a maas eneergia mas alta
When the net forces equal 0 Newtons, they are a balanced force.
Gravitational potential energy is equal to (mgh) so 1.5•9.8•200=2940
Or C
Answer:
The <u>water vapor</u> will have the greatest entropy at the triple point
Explanation:
At the triple point of water, which has the properties of 0.0075°C temperature and 6.11657 mbar pressure, solid ice, liquid water and water vapor exist together in a location
According to Professor Stephen Lower on LibreTexts website entropy is a measure the extent to which thermal energy is shared and spread in a system
The change in entropy, ΔS = ΔH/T
The heat change in
= 6.01 kJ/mol
The heat change in vaporization,
= 45.05 kJ/mol
The heat change in sublimation,
= 51.06 kJ/mol
Therefore, the entropy of the water vapor
> The entropy of liquid water,
> The entropy of the solid ice, 
The portion with the highest entropy at the triple point is the water vapor
The water vapor will have the greatest entropy at the triple point