Questions by anonymous

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1 answer

The diagram below shows a car acid hydrometer.

asked Jul 7, 2021 in Physics Form 1

0 votes

1 answer

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

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1 answer

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

asked Jul 7, 2021 in Physics Form 1

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1 answer

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

asked Jul 7, 2021 in Physics Form 1

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1 answer

Explain the following as regards the solar heater:

asked Jul 7, 2021 in Physics Form 1

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1 answer

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.

asked Jul 7, 2021 in Physics Form 1

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1 answer

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

asked Jul 7, 2021 in Physics Form 1

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1 answer

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

asked Jul 7, 2021 in Physics Form 2

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1 answer

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)

asked Jul 7, 2021 in Physics Form 1

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2 answers

State the principle of moments

asked Jul 7, 2021 in Physics Form 2

0 votes

1 answer

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.

asked Jul 7, 2021 in Physics Form 3

0 votes

1 answer

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

asked Jul 7, 2021 in Physics Form 1

0 votes

1 answer

State the SI unit of density

asked Jul 7, 2021 in Physics Form 1

0 votes

1 answer

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)

asked Jul 7, 2021 in Physics Form 1

0 votes

1 answer

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.

asked Jul 7, 2021 in Physics Form 1

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1 answer

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

asked Jul 5, 2021 in Chemistry Form 4

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1 answer

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

asked Jul 5, 2021 in Chemistry Form 4

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1 answer

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 (

asked Jul 5, 2021 in Chemistry Form 3

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1 answer

Air was passed through reagents as shown below.

asked Jul 5, 2021 in Chemistry Form 1

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1 answer

Explain why hard water flowing in lead pipes may be safer for drinking than soft water flowing in the same pipes

asked Jul 5, 2021 in Chemistry Form 3

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