Answer:
The second law of thermodynamics describes the direction in which heat is transferred between systems, <u>heat is a form of energy</u> in transition.
This law says that heat or energy always flows spontaneously from the body or system with a higher temperature to a lower temperature system (from something hot to something cold, and not the other way around).
This is why if we leave an ice at room temperature it will eventually melt, because <u>the environment transferred energy to the ice</u> and caused its temperature to increase and thus to turn into a liquid form.
The second law can also be interpreted in terms of entropy, and tells us that entropy, which is often interpreted as a measure of disorder, always increases.
Answer:
The work energy added to the gas is
W = -72.48472 kJ
Explanation:
For constant pressure process
Work is given W = p×
However dH = m×
= 1875 J
For mass m, dQ = 2625 J
That is m×1875 = 2625 or m = 2625/1875 = 1.4 kg
Therefore work doneper unit mass of gas is -W = p×(v₂ - v₁)
but pv = RT therefore work done per unit mass = -R×(T₂ - T₁) = -R×ΔT and
ΔT = 180.4K
Work done = -1.4×0.287×180.4 = -72.48472 kJ
The velocity vector will move you 200 miles east in 4 hours traveling at a constant speed is 50 mph. Below is the solution:
Given:
200 miles
4 hours
200 miles/ 4 hours = 50 mph, east
Hope it helps.
