– Viscosity acting upwards
- Upthrust acting upwards
- Weight acting downwards
sharon kalunda answered the question on April 2, 2019 at 11:01
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Date posted: April 2, 2019. Answers (1)
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Explain why(Solved)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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The figure below shows a block of mass 25g and density 200kg/m3 submerged beam by means of a thread. A mass of 2g if suspended form the beam as shown in the figure below.
(i) Determine the up thrust force acting on the block.
(ii) Calculate the density of the liquid.
Date posted: April 2, 2019. Answers (1)
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Calculate the diameter of the...(Solved)
A bubble of air has a diameter of 2.0 mm when it is 0.5m below the water surface of a boiler.
Calculate the diameter of the bubble as it reaches the surface, assuming that the temperature
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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(ii) its efficiency.
Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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wheel. If the radii...(Solved)
A wheel and axle are used to raise a load of 280N by a force 40N applied to the rim of the
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(iii) The efficiency
Date posted: April 2, 2019. Answers (1)
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The graph below shows the potential energy against displacement for a body of mass 80 g.
The body oscillates about point R. Calculate the velocity of the body at:
(i) P and T
(ii) Q and S
(iii) at R
Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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0.5kg of naphthalene contained in an aluminium can of mass 0.4kg is melted in a water bath and raised to a temperature of 100oC . Calculate the total heat given out when the can and its contents are allowed to cool to room temperature, 20oC . Neglect losses by evaporation during heating process and give your answer to the nearest kilojoule.(For naphthalene melting point = 80oC , Specific heat capacity for both liquid and solid =2100J/KgK; specific latent heat of fusion = 170000J/Kg.For aluminium: specific heat capacity = 900J/Kg/k
Date posted: April 2, 2019. Answers (1)
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An electric heater 1KW 240V is used to raise the temperature of a 5kg copper block from 15oC to 33oC. If the specific heat capacity of copper is 400J/Kg/K and assuming no heat is lost to the surrounding,Calculate the time taken.
Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Figure below shows a test tube partially filled with water. An ice wrapped in wire gauze is placed at the bottom of the test-tube. It is then held in the flame of a bunsen burner as shown below
State and explain what will be observed after some time
Date posted: April 2, 2019. Answers (1)