A man walks 1km due east and then 1km due north. His displacement is
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1978
An ice cube floats in a glass of water filled to the brim. What happens when the ice melts?
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1978
A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?
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1978
A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms-2)
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1978
An air force jet flying with a speed of 335ms-1 went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired?
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1978
The factional force between two bodies
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1978
The force required to make an object of mass m, travelling with velocity v, turn in a circle of radius r is
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1978
To determine the weight of an object you could
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1978
The internationally agreed system of units(SI) for physical measurements are
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1978
mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boil…
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1978
A machine gun with a mass of 5kg fires a 50g bullet at speed of 100ms-1. The recoil speed of the machine gun is
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1978
A temperature 20oC is the same as
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1978
A few grains of table salt were put in a cup of water, kept at constant temperature and left undisturbed. Eventually all the water tasted salty. The action is due to
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1978
The statements below were made by some students describing what happened during the determination of the melting point of solids. I. the temperature of the solid was solid until melting started Ii. the temperature of the…
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1978
A solid suspended by a piece of string is completely immersed in water. On attempting to lift the solid out of the water, the string breaks when the solid is partly out of the water. This is because
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1978
The density of a solid is defined as the
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1978
Two resistors R1 and R2 are connected in parallel, R2 being greater than R1. The combined resistance is
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1978
The heat from the sun reaches the earth by the process
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1978
The following are some units i. Ns ii. Mm iii. Nm-2 iv. JoK-1. What are the units of latent heat?
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1978
A gas at pressure PN-m-2 and temperature 27oC is heated to 77oC at constant volume. The new pressure is