In each cycle, the change in internal energy of the refrigerant when it leaves the compresser is 1.20×105 J . What is the work W done by the motor of the compressor?

The work done by the motor of the compressor is 1.20 x 10^5 J.

Explanation:

As the change in the internal energy is given as 1.20 x 10^5 J, and as there is no amount of heat added in the system this is given as

So the work done by the motor of the compressor is 1.20 x 10^5 J.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day