Recent questions

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An object O is placed in front of a concave mirror and on the principal axis, as shown in the figure below. Complete the light ray diagram to locate the position of the image.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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The figure below shows two waveforms representing the same wave motion.

asked Jul 7, 2021 in Physics Form 3 by anonymous

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A small chain is often seen hanging at the back of a petrol carrying lorry. State and explain its significance.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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A steel is to be magnetized by electrical method as shown below. Identify the pole P and Q of the resulting magnet.

asked Jul 7, 2021 in Physics Form 2 by anonymous

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The figure below shows a ray of light incident on the surface of one plane mirror.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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State two conditions under which a pinhole camera may form an image on its screen which has the same size as the object.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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A stone is whirled in a vertical circle as shown in the figure below using a string of length 40 cm. A, B, C and D are various positions of the stone in its motion. The stone makes 2 revolutions per second and has a mass of 100g.

asked Jul 7, 2021 in Physics Form 4 by anonymous

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Explain why the moon is said to be accelerating when revolving around the earth at constant speed

asked Jul 7, 2021 in Physics Form 3 by anonymous

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A body of mass 5 kg is ejected vertically to a height of 7.2 m from the ground when a force acts on it for 0.1s. Calculate the force used to eject the body.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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Distinguish between elastic and inelastic collisions.

asked Jul 7, 2021 in Physics Form 3 by anonymous

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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.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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The diagram below shows a car acid hydrometer.

asked Jul 7, 2021 in Physics Form 1 by anonymous

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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

asked Jul 7, 2021 in Physics Form 1 by anonymous

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If 25.0cm3 of 0.1 MH2S04 solution neutralized a solution containing 1.06g of sodium carbonate in 250cm3 of solution, calculate,

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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

asked Jul 7, 2021 in Physics Form 1 by anonymous

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Study the flow chart below and answer the questions that follow.

asked Jul 7, 2021 in Chemistry Form 3 by anony mous

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

asked Jul 7, 2021 in Physics Form 1 by anonymous

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3g of 257Lr whose half-life is 8 days, remains after undergoing radioactive decay for 32 days. Find the original amount of substance.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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Explain the following as regards the solar heater:

asked Jul 7, 2021 in Physics Form 1 by anonymous

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The chief ore of aluminium is bauxite which mainly contains Al2O3.2H20. The ore is initially purified before aluminium is extracted electrolitically.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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