पाइपों के माध्यम से द्रव प्रवाह के अध्ययन में, कुल ऊर्जा रेखा (total energy line) को और किस नाम से जाना जाता है?

Which of the following dimensionless numbers represents the ratio of inertial force to surface tension force?

Determine PA - PB (in Pascal) for an inverted U-tube differential manometer measuring two pressure points. Specific weight of water = 9810 N/m3, specific gravity of Hg = 13.6, and g = 9.81 m/s2.