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(i) Stirrer.
-Source of heat
(ii) - Volume/length of air column.
- Temperature.
(ii) - Air is tapped by thin mercury thread in a capillary tube. The initial temperature of water is noted and the corresponding volume.
- The water is then heated and this in turn heats up the trapped air in the capillary tube. The volume of the air is read and the temperature is recorded.
- Several values of temperature and corresponding volumes are recorded in a table.
- A graph of volume against absolute ? temperature is drawn which is a straight line passing through the origin.
- An increase in temperature leads to increase in volume.
sharon kalunda answered the question on September 11, 2019 at 07:33
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Date posted: September 11, 2019. Answers (1)
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(ii) How much potential energy does the load gain.
(iii) How much work is done by the effort?
(iv) What is the efficiency of these pulleys?
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(i) Determine:
I the centripetal force on the object.
II the tension in the string when the object is at A.
III the tension in the string when the object is at B.
(ii) The speed of rotation is gradually increased until the string snaps. At what point is the string likely to snap. Explain.
Date posted: September 11, 2019. Answers (1)
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(i) Total momentum before collision....(Solved)
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(i) Total momentum before collision.
(ii) Total momentum after collision.
(iii) Their common velocity after collision.
Date posted: September 11, 2019. Answers (1)
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Date posted: September 11, 2019. Answers (1)
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Date posted: September 11, 2019. Answers (1)
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A certain powder of mass 100g was heated in a container by an electric heater rated 100w for some time. The graph below shows the variation of the temperature of the powder with time.
Use the graph to:
(i) Determine the melting point of the powder
(ii) Determine the quantity of heat supplied by the heater from the time the powder starts to melt to the time it has melted.
(iii) Determine the specific latent heat of fusion of the powder assuming the container absorbs negligible amount of heat.
Date posted: September 11, 2019. Answers (1)
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Given that the density of liquid A is 800kg/m³ and that of liquid B is 1000kg/m³
determine.
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(ii) Weight of liquid B displaced.
(iii) Density of the block.
Date posted: September 11, 2019. Answers (1)
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Date posted: September 11, 2019. Answers (1)
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Date posted: September 11, 2019. Answers (1)
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If the area of the cork is 20cm², and the force F is 300N, determine the pressure of the steam in the boiler.
Date posted: September 11, 2019. Answers (1)
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Date posted: September 11, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)