Answers by anony mous

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The following figure shows velocity –time graph for the journey of a car in 100minutes.

answered Aug 5, 2021 in Physics Form 3

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A force of 2.0N compresses a spring by 1.0mm. Determine the energy stored in the spring

answered Aug 5, 2021 in Physics Form 2

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A stone is tied to a string and whirled in a horizontal circle at a constant speed. In which direction is the stone being accelerated at each point of its path?

answered Aug 5, 2021 in Physics Form 4

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The diagram below shows two identical iron rods, one is placed on a wooden block and the other on a metal block. The ends of the rods are heated as shown.

answered Aug 5, 2021 in Physics Form 1

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A force of 3500N acts on a stationary body of mass 20kg for 0.02 seconds. Calculate the velocity attained by the body

answered Aug 5, 2021 in Physics Form 3

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Explain why mercury forms a convex meniscus and water a concave meniscus in a tube

answered Aug 5, 2021 in Physics Form 1

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A balloon of volume 1.5cm3 containing helium gas at a pressure of 3.0 x 106pa is released from the ground when the temperature is 20°C. What will be the pressure when it reaches a point where the volume becomes 3.0m and the temperature 5°C

answered Aug 5, 2021 in Physics Form 1

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A bullet traveling at a speed of 100ms−1 strikes a wall and penetrates 2cm. How long does the bullet take to stop after striking the wall?

answered Aug 5, 2021 in Physics Form 3

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When a piece of metal is place in water it sinks. But when the same piece of metal is placed on a block of wood it floats explain the observation

answered Aug 5, 2021 in Physics Form 4

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The diagram below shows a rod made of wood on one end and metal on the other end suspended freely with a piece of thread so that it is in equilibrium

answered Aug 5, 2021 in Physics Form 2

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It is observed that a smelly gas released at the back of the laboratory spreads faster on a hot day than on a cold day. Explain.

answered Aug 5, 2021 in Physics Form 1

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The diagram below shows a pith ball in a flask. When a jet of air is blown over the mouth of the flask, the pith ball is found to rise from the bottom. Explain this observation

answered Aug 5, 2021 in Physics Form 1

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The block of wood on the balance in the figure below is a cube of side 20cm Determine its density in kgm−3

answered Aug 5, 2021 in Physics Form 1

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The figure below shows a wave profile

answered Aug 5, 2021 in Physics Form 2

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The figure below shows path of ray of yellow light through a glass prism. The speed of yellow light in the prism is 1.88 x 108m/s.

answered Aug 5, 2021 in Physics Form 3

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An oil drop of average diameter 0.7mm spreads out into a circular patch of diameter 75cm on the surface of water in trough.

answered Aug 5, 2021 in Physics Form 2

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In an experiment to demonstrate Brownian motion, smoke was placed in an air cell and observed under a microscope, Smoke particles were observed to move randomly in the cell.

answered Aug 5, 2021 in Physics Form 1

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The following diagram shows a simplified hydraulic braking system of a car.

answered Aug 5, 2021 in Physics Form 1

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A water pipe of diameter 5.2cm is connected to another pipe of diameter 1.3cm. The speed of the water in the smaller pipe is 3ms-1. What is the speed of the water in the larger pipe?

answered Aug 5, 2021 in Physics Form 2

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The figure below shows the cross section of an aeroplane wing (aerofoil), with the aeroplane moving in the direction shown by the arrow.

answered Aug 5, 2021 in Physics Form 2

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