Answers by anonymous

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Distinguish between elastic and inelastic collisions.

answered Jul 7, 2021 in Physics Form 3

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Figure below shows a uniform plank of weight 20N and length 1.0m balanced by a 0.5kg mass at a distance x from the pivot point O.

answered Jul 7, 2021 in Physics Form 1

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The diagram below shows a car acid hydrometer.

answered Jul 7, 2021 in Physics Form 1

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You are provided with the following:- A block of wood A spring balance Thin thread Overflow can A small measuring cylinder Some liquid With the aid of a labeled diagram an experiment to the law of floatation

answered Jul 7, 2021 in Physics Form 1

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The figure below shows a hydraulic press supporting a load F.

answered Jul 7, 2021 in Physics Form 1

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Liquids expand when heated and contract when cooled. However this is not always true for water.

answered Jul 7, 2021 in Physics Form 1

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Explain the following as regards the solar heater:

answered Jul 7, 2021 in Physics Form 1

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Under a driving force of 3000 N, a car of mass 1200 kg has an acceleration of 1.3 m/s2. Find the frictional resistance acting in the car.

answered Jul 7, 2021 in Physics Form 1

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State the three factors on which the rate of heat flow depends on.

answered Jul 7, 2021 in Physics Form 1

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Calculate the acceleration due to gravity on a planet where an object released from rest falls through a height of 54.2 m in 1.08 s

answered Jul 7, 2021 in Physics Form 2

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An air bubble with a volume of 1 cm3 escapes from the helmet of a diver at a depth of 200 m below the water surface. What will be the volume of the bubble immediately it breaks the surface of water? (Take atmospheric pressure = 10 m of water)

answered Jul 7, 2021 in Physics Form 1

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State the principle of moments

answered Jul 7, 2021 in Physics Form 2

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A railway truck of mass 4000 kg moving at 3 m/s collides with a stationary truck of mass 2000 kg. The couplings join and the trucks move off together. Calculate their common velocity after collision.

answered Jul 7, 2021 in Physics Form 3

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Give a reason why heat transfer by radiation is faster than heat transfer by conduction

answered Jul 7, 2021 in Physics Form 1

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State the SI unit of density

answered Jul 7, 2021 in Physics Form 1

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Calculate the temperature change of water as it falls through a height of 20 m. (Take g = 10 N/kg and s.h.c of water =4200 J/kg/K)

answered Jul 7, 2021 in Physics Form 1

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The level of water in a burette is at 30 cm3. 400 drops of water each of volume 0.015 cm3 was removed from the burette.

answered Jul 7, 2021 in Physics Form 1

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An ore is suspected to contain mainly sodium. Describe a method that can be used to confirm the presence of sodium in the ore.

answered Jul 5, 2021 in Chemistry Form 4

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Sodium is extracted from its ore by the electrolysis process. Name the chief ore from which sodium is extracted from.

answered Jul 5, 2021 in Chemistry Form 4

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Identify substances : (2 marks) Gas B Liquid C Gas D Which property of concentrated sulphuric (VI) acid is being demonstrated by formation of the black solid (

answered Jul 5, 2021 in Chemistry Form 3

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