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i) - Length L of the column of dry air/volume of air.
- Temperature
ii)
- Temperature is raised and corresponding values of L and T are measured and recorded.
- A graph of L (volume) against T is then plotted.
- The graph is straight line through the origin.
- This shows that V and T.
Kavungya answered the question on June 3, 2019 at 13:48
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Determine the value of F.(Solved)
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Determine the value of F.
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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(a) State the effect on its stability when wine is put into the glass.
(b) Explain your answer in...(Solved)
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(a) State the effect on its stability when wine is put into the glass.
(b) Explain your answer in (a) above.
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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When a stream of air at high speed is blown into the tube,...(Solved)
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When a stream of air at high speed is blown into the tube, the paper tube collapses.
Explain this observation.
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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From the graph determine:
(i) Threshold frequency
(ii) Planck’s constant
(iii) Work function of the metal...(Solved)
The graph below shows stopping potential V against frequency for a photocell.
From the graph determine:
(i) Threshold frequency
(ii) Planck’s constant
(iii) Work function of the metal
(Takee = 1.6 x 10-19c)
Date posted: June 3, 2019. Answers (1)
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Calculate the focal length of the lens.(Solved)
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Calculate the focal length of the lens.
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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A student designed a transformer to provide power to an electric bell marked 24W, 6V from a 240V mains. He wound 50 turns and N turns on an iron ring. When he a connected the coil of 50 turns to the bell and the N turns coil to an a.c, he found that the transformer was only 60% efficient. Find:
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(ii) The power in the coil with N turns
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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From the graph determine:
(i) Internal reaction of the cell....(Solved)
The graph below shows the variation of potential difference V with current, I for a certain cell.
From the graph determine:
(i) Internal reaction of the cell.
(ii) The e.m.f of the cell
Date posted: June 3, 2019. Answers (1)
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Determine
(i) The combined capacitance of the arrangement.
(ii) The total energy stored.(Solved)
The figure below shows an arrangement of capacitor connected to a 10V DC supply.
Determine
(i) The combined capacitance of the arrangement.
(ii) The total energy stored.
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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State and explain what happens to the sound from the buzzer as the bottle and its...(Solved)
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State and explain what happens to the sound from the buzzer as the bottle and its contents are cooled to 0oC
Date posted: June 3, 2019. Answers (1)
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Use the information on the figure to answer the questions below.
(a) Name the parts labeled A and B
(b) It is...(Solved)
The figure shows a simple cell.
Use the information on the figure to answer the questions below.
(a) Name the parts labeled A and B
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Date posted: June 3, 2019. Answers (1)
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A mine worker stands between two vertical cliffs 400m from the nearest cliff. The cliff are x and metres apart. Every time he strike the rock once , he hears two echoes, the first one after 2.5 seconds, while the second follows 2 seconds later.
Calculate
(i) The speed of sound in air.
(ii) The value of x
Date posted: June 3, 2019. Answers (1)
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A bullet of mass 20g moving at 400 m/s strikes a block of wood of mass 3.5kg initially at rest. The bullet sticks into the block and the two move off together on a horizontal surface, where a frictional retarting force of 4N is acting between the block and surface.
(i) Determine the initial common velocity of bullet and wooden block.
(ii) What distance does the block move before coming to rest?
Date posted: June 3, 2019. Answers (1)
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A striker kicks a ball of mass 250g initially at rest with a force of 75N. if the foot was in contact with the ball for 0.10sec. Calculate the take off velocity of the ball.
Date posted: June 3, 2019. Answers (1)
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1200g of a liquid at 100C is poured into a well-logged calorimeter. An electric heater rated 1KW is used to heat the liquid. The graph in fig 4 below shows the variation of temperature of the liquid with time.
Use the graph to answer the following questions:
(i) What is the boiling point of the liquid?
(ii) How much heat is given out by the heater to take the liquid to the boiling point?
(iii) Determine the specific heat capacity of the liquid stating any assumptions made.
(iv) If 50g of the liquid vapour was collected by the end of the 8th minute, determine the specific latent heat of vaporization of the liquid.
Date posted: June 3, 2019. Answers (1)