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In the diagram in figure, water flows through a section of a pipe whose diameter changes as shown
(Solved)
In the diagram in figure, water flows through a section of a pipe whose diameter changes as shown
Sketch a graph of the variation of pressure along the line ABCD.
Date posted:
April 4, 2019
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Answers (1)
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The diagram below shows a section of a pipe with different cross – sectional area.
(Solved)
The diagram below shows a section of a pipe with different cross – sectional area.
If water flows with a velocity of 5m/s in section P, what would be the velocity of water in section Q if the cross sectional areas are as shown?
Date posted:
April 4, 2019
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Answers (1)
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A uniform metre rule is balanced at its centre. It is balanced by the 30N, 5N and the magnetic
force between P and Q. P is...
(Solved)
A uniform metre rule is balanced at its centre. It is balanced by the 30N, 5N and the magnetic
force between P and Q. P is fixed and Q has a weight of 5N
Ignoring the weight of the metre rule, calculate the value of the magnetic force between Q and P
Date posted:
April 3, 2019
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Answers (1)
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A uniform half metre long beam, pivoted at the 10cm mark, balances when a mass of 150g is suspended at the 0cm mark as shown...
(Solved)
A uniform half metre long beam, pivoted at the 10cm mark, balances when a mass of 150g is suspended at the 0cm mark as shown below:
Calculate the weight of the beam
Date posted:
April 3, 2019
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Answers (1)
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Figure below shows a uniform rod AE which is 40cm long. It has a mass of 2kg and pivoted at D. If 2N is acting...
(Solved)
Figure below shows a uniform rod AE which is 40cm long. It has a mass of 2kg and pivoted at D. If 2N is acting at point E, and 30N force is passed through a frictionless pulley.
Find the force (x) acting at end A.
Date posted:
April 3, 2019
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Answers (1)
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Figure shows a uniform wooden plank which weighs 10N. The plank is balanced at 0.8m from one end by a mass of 2.5kg.
(Solved)
Figure shows a uniform wooden plank which weighs 10N. The plank is balanced at 0.8m from one end by a mass of 2.5kg.
What is the length of the wooden plank in metres?
Date posted:
April 3, 2019
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Answers (1)
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The diagram below shows a uniform meter rule of mass 300g balanced by two forces F1 and F2.Force F2 is 5N. Assuming there is no...
(Solved)
The diagram below shows a uniform meter rule of mass 300g balanced by two forces F1 and F2.Force F2 is 5N. Assuming there is no frictional force on the pulleys,
Calculate the force F1
Date posted:
April 3, 2019
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Answers (1)
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Figure below shows a uniform metre rule in equilibrium under the forces shown
(Solved)
Figure below shows a uniform metre rule in equilibrium under the forces shown.
Determine the weight of the metre rule
Date posted:
April 3, 2019
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Answers (1)
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Draw a sketch of a micrometer screw gauge showing a reading of 8.53mm.
(Solved)
Draw a sketch of a micrometer screw gauge showing a reading of 8.53mm.
Date posted:
April 3, 2019
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Answers (1)
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Give the reading on the micrometer screw gauge if it has a positive zero error of 0.01mm
(Solved)
Give the reading on the micrometer screw gauge if it has a positive zero error of 0.01mm.
Date posted:
April 3, 2019
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Answers (1)
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Three identical springs A, B and C of negligible weight are arranged as shown below;
(Solved)
Three identical springs A, B and C of negligible weight are arranged as shown below;
If C stretches by 3cm, and bar XY is assumed to be weightless, determine the extension in A
Date posted:
April 3, 2019
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Answers (1)
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Figure shows marble of mass 2.0g placed between the jaws of Vernier calipers. The magnified section is also shown. The reading of the gauge when...
(Solved)
Figure shows marble of mass 2.0g placed between the jaws of Vernier calipers. The magnified section is also shown. The reading of the gauge when the jaws were fully closed without the marble was 0.01cm. Use this information and the figure to answer questions a and b.
a)What is the diameter of the marble?
b)Determine the density of the marble give your answer to three significant figure (assume that the
marble is spherical)
Date posted:
April 3, 2019
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Answers (1)
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A micrometer screw gauge has a negative zero error of 0.06mm. Show on a micrometer screw gauge, including the essential parts only a reading of...
(Solved)
A micrometer screw gauge has a negative zero error of 0.06mm. Show on a micrometer screw gauge, including the essential parts only a reading of 5.99mm
Date posted:
April 3, 2019
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Answers (1)
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The vernier calipers shown below have a zero error of -0.06 cm
(Solved)
The vernier calipers shown below have a zero error of -0.06 cm
State the actual reading on the instrument.
Date posted:
April 3, 2019
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Answers (1)
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a) The data below was obtained in an experiment to estimate the diameter of an oil molecule:-
(Solved)
(a)The data below was obtained in an experiment to estimate the diameter of an oil molecule:-
- Level of oil in burette= 26cm3
- Level of oil in burettes after adding 50drops of oil=25.2cm3
- Diameter of oil patch= 7cm
(i) Determine the volume of one drop of oil
(ii) Calculate the thickness of a molecule
(iii) State any two assumptions made in this experiment
(iv) In the experiment 14.(a) lycopodium powder is used on the water surface. What is the role
of the lycopodium powder?
(b) A molecule of a liquid occupies a space about 1.5 x 10-9-9m in
thickness and breadth. Calculate the number of molecules in a litre of the liquid
Date posted:
April 3, 2019
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Answers (1)
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Lycopodium powder is lightly sprinkled on a clean water surface in a large tray. A red hot needle is plunged at the centre of the...
(Solved)
Lycopodium powder is lightly sprinkled on a clean water surface in a large tray. A red hot needle is plunged at the centre of the water surface. State and explain the observation
Date posted:
April 3, 2019
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Answers (1)
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Water in a dam falls through a height 24.5m. If we assume that there are no energy losses,calculate the new temperature of the water as...
(Solved)
Water in a dam falls through a height 24.5m. If we assume that there are no energy losses,calculate the new temperature of the water as it strikes the lower end, given that its initial temperature at the top of the dam is 18.9°C.Take specific heat capacity of water = 4200J/kg
Date posted:
April 3, 2019
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Answers (1)
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The springs A, B, C and D are identical and each extends by 2cm, when a force of 6N is suspended on the system. Determine...
(Solved)
The springs A, B, C and D are identical and each extends by 2cm, when a force of 6N is suspended on the system. Determine the extension of the system
Date posted:
April 3, 2019
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Answers (1)
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The figure below represents a bimetallic strip of metals X and Y at room temperature.
(Solved)
The figure below represents a bimetallic strip of metals X and Y at room temperature.
The figure below shows its shape when dipped into crushed ice
Sketch a diagram in the space given below to show the shape when the strip is heated to a
temperature above the room temperature
Date posted:
April 3, 2019
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Answers (1)
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The figure below shows a bimetallic strip made of brass and iron. A marble is placed at end A of the bimetallic strip as shown below:-
(Solved)
The figure below shows a bimetallic strip made of brass and iron. A marble is placed at end A of the bimetallic strip as shown below:-
State and explain what will be observed when the bimetallic strip is strongly cooled.
Date posted:
April 3, 2019
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Answers (1)