- ✓Path functions
- BIntensive thermodynamic state variables
- CExtensive thermodynamic state variables
- DPoint functions
$\Delta Q =\Delta U +\Delta W$
Since work done by gas depends on type of
process i.e. path and $\Delta U$ depends just on initial
and final states, so $\Delta Q$ i.e. heat, also has to
depend on process is path.
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[Given: $\pi=22 / 7, g=10 ms ^{-2}$, density of water $=1 \times 10^3 kg m ^{-3}$, viscosity of water $=1 \times 10^{-3} Pa$-s.]
$(A)$ The work done in pushing the ball to the depth $d$ is $0.077 J$.
$(B)$ If we neglect the viscous force in water, then the speed $v=7 m / s$.
$(C)$ If we neglect the viscous force in water, then the height $H=1.4 m$.
$(D)$ The ratio of the magnitudes of the net force excluding the viscous force to the maximum viscous force in water is $500 / 9$.