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There are two types of seismic waves produced by earthquakes. They are called P-waves and S-waves. P-waves are longitudinal and S-waves are transverse.
(a) Explain what is meant by the terms longitudinal and transverse.
longitudinal
transverse
(b) State another example of a longitudinal wave, a transverse wave.
Date posted:
January 2, 2018
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A box is lying on the floor of a fast moving truck; it is observed that when the lorry is suddenly brought to rest, the final position of the box is nearer to the lorry than before. Explain this observation.
Date posted:
January 1, 2018
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Ether is put in a beaker which is placed on a thin film of water. A student blows the ether through a pipe continuously, state and explain the observation made after some time.
Date posted:
December 18, 2017
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Explain how doping produces an n-type semiconductor for a pure semiconductor material.
Date posted:
December 14, 2017
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State three advantages of using GM tube instead of a diffusion cloud chamber to detect radiations from radiations from radioactive substance.
Date posted:
December 12, 2017
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Advantages of lead acid accumulator over primary cell
Date posted:
December 9, 2017
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Explain the effects of total internal reflection.
Date posted:
November 27, 2017
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State the advantages of using mercury as a liquid in glass thermometer.
Date posted:
November 24, 2017
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Explain why water wets glass tubes.
Date posted:
November 24, 2017
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This is under thermal expansion.
Date posted:
November 21, 2017
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This is under Heat transfer.
Date posted:
November 21, 2017
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This is under equilibrium and center of gravity.
Date posted:
November 21, 2017
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This is under Electrostatics.
Date posted:
November 21, 2017
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Explain how heat loss through conduction and radiation is minimized in a vacuum flask.
Date posted:
November 21, 2017
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When a brush is in water,the bristles spread but when it is taken out of water, the bristles cling together. Explain.
Date posted:
November 21, 2017
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State the advantages and disadvantages of anomalous expansion of water?
Date posted:
November 20, 2017
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This is under Measurement.
Date posted:
November 18, 2017
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The topic involved is equilibrium and center of gravity
Date posted:
November 18, 2017
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State the paradox in Drude's Free electron model and explain how this paradox was removed.
Date posted:
November 18, 2017
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State two advantages of the cloud chamber over a charged gold leaf electroscope when used
as detectors of radiations
Date posted:
November 12, 2017
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State the conditions necessary for a wave incident on a slit to be diffracted
Date posted:
November 12, 2017
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Trees planted along a busy road are observed to lean towards the road as they grow. Explain this observation.
Date posted:
November 12, 2017
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Explain the reason why a dropping dust particle in a still room does not trace a straight vertical path
Date posted:
November 12, 2017
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A negatively charged polythene rod is placed on a pan of electric balance. State and explain what happens to the balance reading if a positively charged glass rod is brought closer to the polythene rod.
Date posted:
November 8, 2017
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In a clinical thermometer state how the thermometer can be made.
(a) Move sensitive
(b) Quick acting
Date posted:
November 8, 2017
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A bullet of mass 24g travelling in a horizontal path with a velocity of 450ms-1
strikes a wooden block of wood of mass 976g
resting on a rough horizontal surface. After impact, the bullet and the block move together for a distance of 7.5m before
coming rest.
(a) Name the type of collision which takes place above (1 mark)
(b) What‘s the velocity of the two bodies when they start sliding (2 marks)
(c) Calculate the force which brings the two bodies to rest (3 marks)
(d) Determine the coefficient of friction between the block and the surface during this motion
Date posted:
November 2, 2017
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State the four advantages and the two disadvantages of alkaline accumulators over the lead-acid accumulators and the two disadvantages.
Date posted:
November 2, 2017
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In deriving the equation of continuity, what three assumptions are made?
Date posted:
November 2, 2017
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A partially inflated balloon at sea level becomes fully inflated at higher altitudes. Explain this observation.
Date posted:
November 2, 2017
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Explain why a high jumper flexes his knees when landing on the ground.
Date posted:
November 2, 2017