A piston–cylinder assembly contains propane, initially at 27°C, 1 bar, and a volume of 0.2 m3 . The propane undergoes a process to a final pressure of 4 bar, during which the pressure–volume relationship is pV1.1 = constant. For the propane, evaluate the work and heat transfer, each in kJ. Kinetic and potential energy effects can be ignored.

Heat transfer in the process is -19.6 kJ

Work done in the process is - 28 kJ

Explanation:

As we know that the process equation is given as

now we know that

now from above equation we have

now work done in this process is given as

here we know N = 1.1

so we have

Now we have

now we have

so we have

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west