Earthing machines using spikes.
sharon kalunda answered the question on September 27, 2019 at 09:02
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A wire was connected to a battery and was found that the energy converted to heat was 30J when 20C of charge flowed through the...
(Solved)
A wire was connected to a battery and was found that the energy converted to heat was 30J when 20C of charge flowed through the wire in 5 seconds. Calculate;
i) The p.d between the ends of the wire
ii) The current flowing through the wire
iii)The resistance of the wire
iv)The average power development in the wire
Date posted:
May 20, 2019
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Answers (1)
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Sketch a simple diagram that contains a capacitor, a two way switch, and a load resistor that can be used for charging and discharging a...
(Solved)
Sketch a simple diagram that contains a capacitor, a two way switch, and a load resistor that can be used for charging and discharging a capacitor.
Date posted:
May 20, 2019
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Answers (1)
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A gun is fired and an echo heard at the same place 0.6s later. How far is the barrier, which reflected the sound from the...
(Solved)
A gun is fired and an echo heard at the same place 0.6s later. How far is the barrier, which reflected the sound from the gun? (Speed of sound in air=330ms-1
Date posted:
May 20, 2019
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Answers (1)
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Figure below shows two plane mirrors inclined at an angle x from each other. A viewer counts a total of seven images by looking directly...
(Solved)
Figure below shows two plane mirrors inclined at an angle x from each other. A viewer counts a total of seven images by looking directly from the object O. Determine value of angel x.
Date posted:
May 20, 2019
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Answers (1)
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A piece of wire of length 12m is stretched through 2.5cm by a mass of 5 kg. assuming that the wire obeys the Hookes law,...
(Solved)
A piece of wire of length 12m is stretched through 2.5cm by a mass of 5 kg. assuming that the wire obeys the Hookes law, what force will stretch it through 4.0 cm.
Date posted:
May 20, 2019
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Answers (1)
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An object of the mass 150kg moving at 20m/s collides with a stationary object of mass 90kg.They couple after collision .Determine the :
(i) Total momentum...
(Solved)
An object of the mass 150kg moving at 20m/s collides with a stationary object of mass 90kg.They couple after collision .Determine the :
(i) Total momentum before collision
(ii) Total momentum after collision
(iii) Their common velocity after collision
Date posted:
May 20, 2019
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Answers (1)
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The figure below shows a metallic rod of length 10cm and uniform cross-sectional area 4cm2 suspended from spring balance with 7.5 cm of its length...
(Solved)
The figure below shows a metallic rod of length 10cm and uniform cross-sectional area 4cm2 suspended from spring balance with 7.5 cm of its length immersed in water. The density of the material is 1.5g/cm3.The density of water is 1 g/cm3
Determine:
i) The mass of the rod
ii) The upthrust acting on the rod
iii) The reading 0f the spring balance
iv) The reading of the spring balance when the rod is wholly immersed in water
Date posted:
May 20, 2019
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Answers (1)
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On the axis provided sketch a graph of mechanical advantage (MA) against load for a pulley
system
(Solved)
On the axis provided sketch a graph of mechanical advantage (MA) against load for a pulley
system
Date posted:
May 20, 2019
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Answers (1)
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Water flows steadily along a horizontal pipe at a volume rate of 8.0×10-3m3/s.If the cross-section area of the pipe is 20cm2. Calculate the velocity of...
(Solved)
Water flows steadily along a horizontal pipe at a volume rate of 8.0×10-3m3/s.If the cross-section area of the pipe is 20cm2. Calculate the velocity of the fluid.
Date posted:
May 20, 2019
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Answers (1)
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State two practical applications of stability
(Solved)
State two practical applications of stability
Date posted:
May 20, 2019
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Answers (1)