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Explain the meaning of plastic deformation.
Date posted:
October 1, 2017
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Explain why resultant forces on a sky diver changes as his speed increases.
Date posted:
October 1, 2017
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State one useful application of ultrasounds to man.
Date posted:
October 1, 2017
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Explain why nichrome wire is used as a heating element rather than copper.
Date posted:
October 1, 2017
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Explain why a magnet would demagnetize when held in East-west direction.
Date posted:
October 1, 2017
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Explain why it feels colder at night when the sky is clear than on a cloudy night.
Date posted:
October 1, 2017
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Explain how you can change the weight of an object without changing its mass.
Date posted:
October 1, 2017
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State two industrial uses of radioactive substances.
Date posted:
October 1, 2017
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State any two properties of beta radiation
Date posted:
October 1, 2017
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State any two practical uses of a capacitor.
Date posted:
October 1, 2017
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Explain why vegetables would cook faster in a pressure cooker than when using an ordinary cooking pot.
Date posted:
October 1, 2017
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Explain why Nickel-Chromium alloy is suitably used in electric heating elements.
Date posted:
October 1, 2017
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State advantages of using mercury other than alcohol as a thermometric liquid.
Date posted:
October 1, 2017
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Distinguish between diffraction and interference as used in waves.
Date posted:
October 1, 2017
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Explain why sound waves are not propagated in through vacuum.
Date posted:
October 1, 2017
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Describe how you would separate a mixture of graphite and nickel
Date posted:
October 1, 2017
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Explain why it is dangerous for a diver to stay for long time under deep water.
Date posted:
October 1, 2017
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Explain the effect of wavelength and frequency of light as it passes from one medium to another of greater optical density.
Date posted:
October 1, 2017
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State coulomb's law of electrostatic charges.
Date posted:
October 1, 2017
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Explain why an object falling from a great height will attain a constant velocity.
Date posted:
October 1, 2017
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Explain why vaseline is applied on terminals of a lead acid accumulator after cleaning them.
Date posted:
October 1, 2017
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Explain why telephone lines are loose on a hot day and tight during a cold day.
Date posted:
October 1, 2017
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Explain why farm tractors have wide rear tyres.
Date posted:
October 1, 2017
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Explain how radiations may be used to ensure that containers are filled up with equal amount of content.
Date posted:
October 1, 2017
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State two properties that distinguish cathode rays from x-rays.
Date posted:
October 1, 2017
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State a substance whose relative density is 1.
Date posted:
October 1, 2017
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Define relative density.
Date posted:
October 1, 2017
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State any difference between dry cells and an accumulator.
Date posted:
October 1, 2017
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An automobile electrician notices that by replacing a wire, it becomes hot and its insulation burns off. Explain the most probable mistake she made.
Date posted:
October 1, 2017
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A student is provided with a bar magnet and a string. Explain the easiest way of identifying the poles.
Date posted:
October 1, 2017