1.A hose pipe, laid out flat on the garden, is connected to the water mains and

Question

1.A hose pipe, laid out flat on the garden, is connected to the water mains and is allowed to fill with water. Once the hose is full, the far end of the hose is blocked so the water can no longer escape. The hose pipe is 2.5 cm diameter and is 100m long. Readings of the internal pressure in the hose are taken every 25 m. At what point does the pressure in the hose drop to 50% of its value measured directly at the water mains? Select one: a. 25m b. 50 m c. 75 m d. There is no pressure drop.

2.Liquids are much denser than gases, is it also true that all solids are denser than liquids? Select one: a. Yes b. No c. Yes, but only if you exclude mercury
3.Does Archimedes' Principle state that the bouyant force on a body immersed in a liquid is equal to...... Select one: a. ...the weight of the body? b. ...the weight of the liquid displaced? c. ...the volume of liquid displaced?
4 .The upward lift on an aerofoil wing section is an application of which person's work? Select one: a. Torricelli? b. Archimedes? c. Bernoulli?
5. Bernoulis equation is a restatement of the principle of conservation of Select one: a. Volume applied to the flow of an ideal fluid b. Density applied to the flow of an ideal fluid c. Energy applied to the flow of an ideal fluid 1.A hose pipe, laid out flat on the garden, is connected to the water mains and is allowed to fill with water. Once the hose is full, the far end of the hose is blocked so the water can no longer escape. The hose pipe is 2.5 cm diameter and is 100m long. Readings of the internal pressure in the hose are taken every 25 m. At what point does the pressure in the hose drop to 50% of its value measured directly at the water mains? Select one: a. 25m b. 50 m c. 75 m d. There is no pressure drop.

2.Liquids are much denser than gases, is it also true that all solids are denser than liquids? Select one: a. Yes b. No c. Yes, but only if you exclude mercury
3.Does Archimedes' Principle state that the bouyant force on a body immersed in a liquid is equal to...... Select one: a. ...the weight of the body? b. ...the weight of the liquid displaced? c. ...the volume of liquid displaced?
4 .The upward lift on an aerofoil wing section is an application of which person's work? Select one: a. Torricelli? b. Archimedes? c. Bernoulli?
5. Bernoulis equation is a restatement of the principle of conservation of Select one: a. Volume applied to the flow of an ideal fluid b. Density applied to the flow of an ideal fluid c. Energy applied to the flow of an ideal fluid 1.A hose pipe, laid out flat on the garden, is connected to the water mains and is allowed to fill with water. Once the hose is full, the far end of the hose is blocked so the water can no longer escape. The hose pipe is 2.5 cm diameter and is 100m long. Readings of the internal pressure in the hose are taken every 25 m. At what point does the pressure in the hose drop to 50% of its value measured directly at the water mains? Select one: a. 25m b. 50 m c. 75 m d. There is no pressure drop.

2.Liquids are much denser than gases, is it also true that all solids are denser than liquids? Select one: a. Yes b. No c. Yes, but only if you exclude mercury
3.Does Archimedes' Principle state that the bouyant force on a body immersed in a liquid is equal to...... Select one: a. ...the weight of the body? b. ...the weight of the liquid displaced? c. ...the volume of liquid displaced?
4 .The upward lift on an aerofoil wing section is an application of which person's work? Select one: a. Torricelli? b. Archimedes? c. Bernoulli?
5. Bernoulis equation is a restatement of the principle of conservation of Select one: a. Volume applied to the flow of an ideal fluid b. Density applied to the flow of an ideal fluid c. Energy applied to the flow of an ideal fluid

Explanation / Answer

1. d -------- hose is fully filled so uniform pressure everywhere. no pressure difference.

2. c

3. b

4. c

5. c

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