Questions by anony mous

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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

asked 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?

asked 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

asked 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

asked 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.

asked 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

asked 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

asked Aug 5, 2021 in Physics Form 1

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The figure below shows a wave profile

asked 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.

asked 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.

asked 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.

asked Aug 5, 2021 in Physics Form 1

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

asked 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?

asked 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.

asked Aug 5, 2021 in Physics Form 2

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State what is meant by streamline flow.

asked Aug 5, 2021 in Physics Form 2

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In an experiment, a spiral spring was hung vertically from a stand and various weights attached in turn to its lower end. The extension of the spring for the various weight was noted. The results were recorded as shown in the following table.

asked Aug 5, 2021 in Physics Form 1

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State Hooke’s law for a spiral spring

asked Aug 5, 2021 in Physics Form 2

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A bullet of mass 20g moving with a velocity of 30m/s penetrates a sand bag and is brought to rest in 0.05s. Find the average retarding force of the sand

asked Aug 5, 2021 in Physics Form 3

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1 answer

A high jumper loads on saw dust. Explain how the saw dust helps in reducing the force of impact

asked Aug 5, 2021 in Physics Form 1

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1 answer

Sketch a velocity time graph for a body that is uniformly accelerated

asked Aug 5, 2021 in Physics Form 3

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