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(a) backstroke
As a valve. Pump handle is drawn out as shown. Volume of air below washer
increases and pressure is reduced below atm. pressure. Air from outside the
pump is drawn in.
(b) forward stroke
As a piston.
Pump handle is pushed in air, the barrel is compressed.
Or
The pressure of compressed air is greater than the air in the tyre.
Kavungya answered the question on June 4, 2019 at 07:28
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Date posted: June 4, 2019. Answers (1)
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Date posted: June 4, 2019. Answers (1)
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Date posted: June 4, 2019. Answers (1)
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- A student observed some pollen grains on the surface of water in a beaker with the
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(a) State the observation...(Solved)
A student observed some pollen grains on the surface of water in a beaker with the
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(b) Explain the observation in (a) above.
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Date posted: June 4, 2019. Answers (1)
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Determine the...(Solved)
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Date posted: June 4, 2019. Answers (1)
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Date posted: June 4, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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(ii) height of the image.
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Date posted: June 3, 2019. Answers (1)
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(i) Using rays locate the image as seen by observer, E.
(ii) Give one application of...(Solved)
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Date posted: June 3, 2019. Answers (1)
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(i) The minimum frequency of radiation that will cause the emission of electrons from the...(Solved)
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Date posted: June 3, 2019. Answers (1)
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Use the graph to determine:-
(i) the threshold wavelength.
(ii) Planck’s...(Solved)
The graph below show stopping potential Vs against frequency f. (Take C = 3.0 x 108msˉ¹).
Use the graph to determine:-
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(ii) Planck’s constant.
(iii) the work function of the metal.
Date posted: June 3, 2019. Answers (1)
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Calculate the effective capacitance between A and B.(Solved)
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Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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(a) What will be the angle through which the reflected ray rotates if the...(Solved)
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(b) What would be the new angle of reflection?
Date posted: June 3, 2019. Answers (1)
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How many alpha and beta particles are emitted?(Solved)
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How many alpha and beta particles are emitted?
Date posted: June 3, 2019. Answers (1)
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Date posted: June 3, 2019. Answers (1)
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The figure below shows a uniform rod of height 8cm floating vertically in a beaker containing two immiscible liquids P and Q. The densities of the liquids are 800kg/m³ and 1200g/m³ respectively the cross-sectional area of the rod is 2cm².
Determine
(i) the weight of liquid P displaced by the rod.
(ii) the weight of liquid Q displaced by the rod.
(iii) the mass of the rod.
(iv) the density of the rod.
Date posted: June 3, 2019. Answers (1)