The specific gravity of a liquid is 0.85. The gravitational acceleration at a location is 7 m/s². The specific weight is (a) 5950 N/m³ (b) 5.95 N/m³ (c) 595 N/m³ (d) 5090 N/m³. The... The specific gravity of a liquid is 0.85. The gravitational acceleration at a location is 7 m/s². The specific weight is (a) 5950 N/m³ (b) 5.95 N/m³ (c) 595 N/m³ (d) 5090 N/m³. The pressure inside a soap bubble of 50 mm diameter is 25 N/m² above the outside atmospheric pressure. The surface tension in soap film would be (a) 0.624 N/m (b) 0.156 N/m (c) 0.312 N/m (d) 0.078 N/m. Each term of Bernoulli's equation stated in the form P/w + v²/2g + z = const. has dimension (a) Nm/N (b) N (c) mN/kg (d) mN/s. The height of water column corresponding to a pressure equivalent of 75 cm of mercury column (in cm) is (a) 1000 (b) 1040 (c) 1020 (d) 1060. A streamline is a line (a) across which there is no flow (b) which is along the path of a particle (c) on which tangent drawn at any point gives the direction of velocity (d) both (b) and (c). If the Reynolds number is less than 2000 the flow in a pipe is (a) Laminar flow (b) Turbulent flow (c) Transition flow (d) None of the above.
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The image contains a set of physics-related questions focusing on fluid mechanics concepts such as specific gravity, pressure, Bernoulli's equation, and flow types. The questions are likely designed to assess knowledge in fluid dynamics and related principles.
Answer
i) 5950 N/m³. ii) 0.156 N/m. iii) Nm/N. iv) 1000 cm. v) Both (b) and (c). vi) Laminar flow.
i) 5950 N/m³. ii) 0.156 N/m. iii) Nm/N. iv) 1000 cm. v) Both (b) and (c). vi) Laminar flow.
Answer for screen readers
i) 5950 N/m³. ii) 0.156 N/m. iii) Nm/N. iv) 1000 cm. v) Both (b) and (c). vi) Laminar flow.
More Information
- Specific weight calculation uses 0.85 of water density (1000 kg/m³) and the local gravity (7 m/s²). 2. Surface tension uses 4 times formula as it's a bubble with two interfaces. 3. Bernoulli's equation's dimension simplifies to length terms. 4. Conversion uses standard densities (mercury to water). 5. Laminar flow is well established for Reynolds below 2000.
Tips
Ensure correct conversion and use of gravity and densities when calculating specific weight and pressure height. Carefully apply formulas according to conditions (bubble has two surfaces).
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