A temperature increase causes the brass tube to expand and move to the left. The invar rod also moves with it and causes the valve to partially close. This reduces the gas inflow. A decrease in temperature causes the brass tube to contract and move the valve forward. The movement opens the entrance and increases the flow of gas to the burners
Kavungya answered the question on May 31, 2019 at 09:17
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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ii) What type of lens is used to correct the defect?(Solved)
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i) State the cause of the defect.
ii) What type of lens is used to correct the defect?
Date posted: May 31, 2019. Answers (1)
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The figure below shows an object placed infront of a thin lens. The focal length of the lens is 10cm. The screen is adjusted
until an image which is magnified 5 times is obtained.
From the information:
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ii) State any other characteristics of the image formed.
iii) Find the value of u.
Date posted: May 31, 2019. Answers (1)
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leaf electroscopes respectively.
Explain why the leaf collapses in figure...(Solved)
The figure below shows ultraviolet radiation striking polished zinc plates placed on negatively and positively charged gold
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Explain why the leaf collapses in figure (a) but does not collapse in figure (b).
Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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i) Explain why the core is a continuous loop.
ii) Give...(Solved)
The figure below shows a simple transformer. Study it and answer the questions that follow.
i) Explain why the core is a continuous loop.
ii) Give a reason as to why the core is laminated.
iii) State and explain which coils are thicker.
Date posted: May 31, 2019. Answers (1)
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Given that the refractive index of glass is 1.48, determine the value of theta.(Solved)
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Given that the refractive index of glass is 1.48, determine the value of theta.
Date posted: May 31, 2019. Answers (1)
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(i) State and explain what is observed in the galvanometer.
(ii) Explain briefly the...(Solved)
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Date posted: May 31, 2019. Answers (1)
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placed at the bottom...(Solved)
In an experiment to determine the refractive index of a liquid, the liquid was poured into a measuring cylinder, a pin was
placed at the bottom of the cylinder and another pin was used to locate the apparent position of the first pin. The values
of real and apparent depth were used to plot a graph in the figure below.
i) From the graph determine the refractive index of the liquid.
ii) Given that the velocity of light in vacuum is 3.0 x 108 m/s what would be the velocity of light in the liquid
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Determine:-
(i) The total capacitance
(ii) The total charge
(iii) The energy stored by the 2µF...(Solved)
The diagram below shows an arrangement of capacitors in a circuit.
Determine:-
(i) The total capacitance
(ii) The total charge
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Date posted: May 31, 2019. Answers (1)
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Date posted: May 31, 2019. Answers (1)
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Determine:-
(i) Total resistance in the circuit.
(ii) The current in the...(Solved)
The cell in the figure below has an e.m.f. of 1.8V and negligible internal resistance.
Determine:-
(i) Total resistance in the circuit.
(ii) The current in the circuit.
(iii) Reading of the voltmeter.
Date posted: May 31, 2019. Answers (1)
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On the same diagram draw appropriate ray(s)...(Solved)
The figure below shows an object O infront of a concave mirror and its image, I, formed after reflection.
On the same diagram draw appropriate ray(s) to locate the principal focus F, of the mirror.
Date posted: May 31, 2019. Answers (1)