A weather balloon slowly expands as energy is transferred as heat from the outside If the average net pressure is air. 1.5 x 103
Pa and the balloon's volume increases by 5.4 x 10 5 m how much work is done by the expanding gas? What thermodynamic process does this situation resemble?
There is only one pressure this situation would be a "constant pressure" process. The work done by expanding gas is. =p(delta V) = (1.5e3)(5.e3)(5.4e-5) N/m^2xm^3) N/m2xm^3= 8.1e-2 N-m ANS
The gas inside the balloon is gain heat from the surroundings and its volumes increase, but the pressure remains constant. So, it's a pressure constant process.
For this thermodynamic process, the work is the pressure multiplied by the volume variation:
The Sun's gravitational pull keeps our planet orbiting the Sun. The motion of the Moon is affected by the gravity of the Sun and Earth. Moon's gravity pulls on the Earth and makes the tides rise and fall.
