Given the mass of R-134a m = 300kg; Volume of the container V = 9 cu. meter; Temperature of R-134a T = 10 degrees Celsius;
Formula of specific volume : v = V / m = 9 / 300 = 0.03 cu. m / kg.
At T = 10 degrees Celsius from saturated R-134a tables, vf = 0.0007930 cu. m /kg; vg = 0.049403 cu. m/kg. We know v = vf + x (vg - vf), so 0.03 = 0.0007930 + x (0.049403 - 0.0007930), which makes x = 0.601.
Specific enthalpy of R-134a in the container is h = hf + x*hfg = 65.43 + (0.601 * 190.73). Answer is 180.0587 kJ/kg
Answer:
Les changements d'état sont des changements physiques. Ils se produisent lorsque la matière absorbe ou perd de l'énergie. Les processus dans lesquels la matière change entre les états liquide et solide sont la congélation et la fusion. Les processus dans lesquels la matière change entre les états liquide et gazeux sont la vaporisation, l'évaporation et la condensation.
Im not french and I used translate so if it messes up with the translation, I am sorry
Answer:
Block A
Explanation:
Block A will float higher in the water compared to the second Block.
The density of water is 1g/cm³.
According to the principle of floatation "an object that floats in a liquid will displace equal amount of fluid to the weight of the object".
A body will become more submerged in water if it has more density because density is the mass per volume of body.
An object with a higher density than another will sink in the liquid of the one with lesser density.
- Object A has lesser density and will float higher up and displace very little water.
- Object B has higher density and will be more submerged.
If you did this then it could lead to cheating or someone else getting hurt.
The direction of the skaters after the collision is 61 degrees.
<h3>
Momentum of the skaters</h3>
The momentum of the skaters is calculated as follows;
P(N) = 58.9 x 7.8 = 459.42 kgm/s
P(E) = 72.6 x 3.5 = 254.1 kgm/s
<h3>Direction of the skaters after collision</h3>
The direction of the skaters after the collision is calculated as follows;

Thus, the direction of the skaters after the collision is 61 degrees.
Learn more about direction of collision here: brainly.com/question/25891473