(i) increase their absorbing power
(ii) Increase the surface area of exposure
(iii) Copper is a good conductor of heat
(iv) Prevent heat loss to the surrounding/retain heat in the water
(v) Allow the rays of light inside
Kavungya answered the question on May 20, 2019 at 07:47
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A car weighs 12 000N.
i. What is the force acting on one tyre if the weight is evenly distributed amongst
the tyres?
ii. If the area...
(Solved)
A car weighs 12 000N.
i. What is the force acting on one tyre if the weight is evenly distributed amongst
the tyres?
ii. If the area of contact of tyre is 80cm2.Calculate the pressure of the air in the tyre.
Date posted:
May 20, 2019
.
Answers (1)
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You are provided with a test – tube, thread and a meter ruler. Outline the steps you would use to measure the circumference and hence...
(Solved)
You are provided with a test – tube, thread and a meter ruler. Outline the steps you would use to measure the circumference and hence the diameter of the test – tube.
Date posted:
May 20, 2019
.
Answers (1)
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The figure below shows a rubber sucker, explain why the sucker sticks on a clean flat
Surface.
(Solved)
The figure below shows a rubber sucker, explain why the sucker sticks on a clean flat
Surface.
Date posted:
May 20, 2019
.
Answers (1)
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A micrometer screw gauge has a zero error of -0.03mm. It is used to measure the diameter of a wire. If the actual diameter of...
(Solved)
A micrometer screw gauge has a zero error of -0.03mm. It is used to measure the diameter of a wire. If the actual diameter of the wire is 0.30mm, draw the micrometer screw gauge showing the measured diameter of the wire.
Date posted:
May 20, 2019
.
Answers (1)
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Water falls through a height of 60 m at a rate of flow of 1.0x10^5 per minute. Calculate the amount of power generated at the base...
(Solved)
Water falls through a height of 60 m at a rate of flow of 1.0x10^5 per minute. Calculate the amount of power generated at the base of the water fall (the mass of 1 litre of water is 1 kg)
Date posted:
May 19, 2019
.
Answers (1)
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An aeroplane is moving horizontally through still air at a uniform
speed. It is observed that when the speed of the plane is increased, its
height above...
(Solved)
An aeroplane is moving horizontally through still air at a uniform
speed. It is observed that when the speed of the plane is increased, its
height above the ground increases. State the reason for this observation.
Date posted:
May 7, 2019
.
Answers (1)
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Give the molecular explanation of Charles’ law.
(Solved)
Give the molecular explanation of Charles’ law.
Date posted:
April 24, 2019
.
Answers (1)
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Give the molecular explanation of Boyle’s law.
(Solved)
Give the molecular explanation of Boyle’s law.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment that can be used to verify the Boyle’s law
(Solved)
Describe an experiment that can be used to verify the Boyle’s law
Date posted:
April 24, 2019
.
Answers (1)
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Using Young’s double slit experiment demonstrate the interference of light waves.
(Solved)
Using Young’s double slit experiment demonstrate the interference of light waves.
Date posted:
April 24, 2019
.
Answers (1)
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Discuss different types of interference of waves.
(Solved)
Discuss different types of interference of waves.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment that can be used to demonstrate Effects of reduced pressure on boiling point.
(Solved)
Describe an experiment that can be used to demonstrate Effects of reduced pressure on boiling point.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment that can be used to demonstrate Effects of increased pressure on boiling point.
(Solved)
Describe an experiment that can be used to demonstrate Effects of increased pressure on boiling point.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment that can be used to determine the specific latent heat of vaporization of water using mixture method.
(Solved)
Describe an experiment that can be used to determine the specific latent heat of vaporization of water using mixture method.
Date posted:
April 24, 2019
.
Answers (1)
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Explain how specific latent heat of fusion can be determined using mixture method.
(Solved)
Explain how specific latent heat of fusion can be determined using mixture method.
Date posted:
April 24, 2019
.
Answers (1)
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Using a graph discuss the change of state when ice is heated from -20C until it boils.
(Solved)
Using a graph discuss the change of state when ice is heated from -20C until it boils.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment to show how electrical method can be used to determine specific heat capacity.
(Solved)
Describe an experiment to show how electrical method can be used to determine specific heat capacity.
Date posted:
April 24, 2019
.
Answers (1)
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Describe an experiment to determine the specific heat capacity by the method of mixtures.
(Solved)
Describe an experiment to determine the specific heat capacity by the method of mixtures.
Date posted:
April 24, 2019
.
Answers (1)
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The figure below shows five resistors and 5.0V supply.
(Solved)
The figure below shows five resistors and 5.0V supply.
Calculate:
a) The effective resistance of the circuit.
b) The total circuit current.
Date posted:
April 24, 2019
.
Answers (1)
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Three resistors are connected as shown below:
(Solved)
Three resistors are connected as shown below:
Calculate:
a) The total resistance of the circuit.
b) The current through each resistor.
Date posted:
April 24, 2019
.
Answers (1)