i) P - brustiles
Q- ship rings
ii) X- North
Y- South
iii)- Increasing speed of rotation of the coil
- Increasing the number of turns in the coil
- Increasing the strength of the magnet
sharon kalunda answered the question on April 4, 2019 at 10:30
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Using a well- labeled diagram explain how a moving coil meter works
(Solved)
Using a well- labeled diagram explain how a moving coil meter works
Date posted:
April 4, 2019
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Answers (1)
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Two pins are attached to each of the magnets as shown below.
(Solved)
Two pins are attached to each of the magnets as shown below.
Explain the behaviour of pins in each case.
Date posted:
April 4, 2019
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Answers (1)
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The figure below shows a micrometer screw gauge being used to measure the diameter of a rod.
The thimble scale has 50 divisions.
(Solved)
The figure below shows a micrometer screw gauge being used to measure the diameter of a rod.
The thimble scale has 50 divisions.
What is the reading?
Date posted:
April 4, 2019
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Answers (1)
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A gold leaf electroscope is positively charged as shown in the diagram in figure where C is the cap and L is the gold leaf....
(Solved)
A gold leaf electroscope is positively charged as shown in the diagram in figure where C is the cap and L is the gold leaf. State and explain what happens to L when a positively charged rod is
brought near C without touching it.
Date posted:
April 4, 2019
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Answers (1)
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The figure below shows an uncharged pith ball under the attraction of a charged ball.
(Solved)
The figure below shows an uncharged pith ball under the attraction of a charged ball.
State and explain what would be observed after the two pith balls touch
Date posted:
April 4, 2019
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Answers (1)
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A student hung a magnet next to a coil of wire to make a door chime as shown in figure :-
(Solved)
A student hung a magnet next to a coil of wire to make a door chime as shown in figure :-
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(ii) What should the student do to make the magnet hit the chime bar harder?
Date posted:
April 4, 2019
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Answers (1)
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In the diagram below, the U-tube contains two liquids; X and Y which do not mix. If the density
of liquid Y is 900Kgm-3 and that...
(Solved)
In the diagram below, the U-tube contains two liquids; X and Y which do not mix. If the density
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Date posted:
April 4, 2019
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Answers (1)
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A minibus of mass 2000kg traveling at a constant velocity of 36km/h collides with a stationary
car of mass 1000kg. The impact takes 2 seconds before...
(Solved)
A minibus of mass 2000kg traveling at a constant velocity of 36km/h collides with a stationary
car of mass 1000kg. The impact takes 2 seconds before the two move together at a constant
velocity for 20 seconds. Calculate:
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(ii) The distance moved after impact
(iii) The impulse force
(iv) The change in kinetic energy
Date posted:
April 4, 2019
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Answers (1)
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A hydraulic machine is used to raise a load of 100kg at a constant velocity through a height
of 2.5m. The radius of the effort piston...
(Solved)
A hydraulic machine is used to raise a load of 100kg at a constant velocity through a height
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(i) The effort needed
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Date posted:
April 4, 2019
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Answers (1)
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Name one machine that has a velocity ratio of less than one (V.R < 1)
(Solved)
Name one machine that has a velocity ratio of less than one (V.R < 1)
Date posted:
April 4, 2019
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Answers (1)
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An inclined plane of length 5m is used to raise a body of mass 60kg to the back of a lorry. If the
plane is inclined...
(Solved)
An inclined plane of length 5m is used to raise a body of mass 60kg to the back of a lorry. If the
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that a constant force of 650 N is used to push the body up the plane
Date posted:
April 4, 2019
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Answers (1)
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A ball of mass 100g is kicked horizontally from the top of a cliff. If the ball takes 4 seconds
to hit the ground, determine the...
(Solved)
A ball of mass 100g is kicked horizontally from the top of a cliff. If the ball takes 4 seconds
to hit the ground, determine the height of the cliff
Date posted:
April 4, 2019
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Answers (1)
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A faulty thermometer records 11oC instead of 0oC and 98oC instead of 100oC. Determine the reading on the thermometer when dipped in liquid at a temperature...
(Solved)
A faulty thermometer records 11oC instead of 0oC and 98oC instead of 100oC. Determine the reading on the thermometer when dipped in liquid at a temperature of 56oC
Date posted:
April 4, 2019
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Answers (1)
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The velocity-time graph in the figure below illustrates the motion of a ball which has been projected vertically upwards from the surface of the moon....
(Solved)
The velocity-time graph in the figure below illustrates the motion of a ball which has been projected vertically upwards from the surface of the moon. The weight of the object on earth’s surface is 20N, when the acceleration due to gravity is 10ms-2.
(i) State why the velocity becomes negative after 3seconds.
(ii) Determine the acceleration of free fall on the moon showing clearly your work
(iii) Determine the total distance travelled by the ball in 5.0sec
(iv) Find the weight of the ball on the moon
Date posted:
April 4, 2019
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Answers (1)
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Figure below shows a car with a dummy driver before and after a collision test:
(Solved)
Figure below shows a car with a dummy driver before and after a collision test:
The mass of the dummy driver is 90kg. The impact time to reduce the dummy’s speed from
45m/s to zero is 1.2 seconds:
(i) Calculate the average force on the dummy during impact
(ii) State the main energy transformation during the collision
(iii) Calculate how much of the dummy’s energy is transformed during the collision
Date posted:
April 4, 2019
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Answers (1)
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The figure below shows a uniform bar of length 1.0m pivoted near one end. The bar is kept in equilibrium by a spring balance as...
(Solved)
The figure below shows a uniform bar of length 1.0m pivoted near one end. The bar is kept in equilibrium by a spring balance as shown:
Given that the reading of the spring balance is 0.6N, determine the reaction force at the pivot.
Date posted:
April 4, 2019
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Answers (1)
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The figure below shows a section of a ticker tape. The dots were made at a frequency of 50 Hz.
Determine the acceleration of the trolley...
(Solved)
The figure below shows a section of a ticker tape. The dots were made at a frequency of 50 Hz.
Determine the acceleration of the trolley pulling the tape.
Date posted:
April 4, 2019
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Answers (1)
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When a load of 20N is hung from a spring, the spring has a length of 15 cm. The same spring
has a length of 17...
(Solved)
When a load of 20N is hung from a spring, the spring has a length of 15 cm. The same spring
has a length of 17 cm when supporting a load of 25N. Determine the spring length when
supporting no load.
Date posted:
April 4, 2019
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Answers (1)
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A single light spring extends by 3.6cm when supporting a load of 2.5kg. What is the total
extension in the arrangement shown below. (Assume the springs...
(Solved)
A single light spring extends by 3.6cm when supporting a load of 2.5kg. What is the total
extension in the arrangement shown below. (Assume the springs are identical)
Date posted:
April 4, 2019
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Answers (1)
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Sketch a graph of length of a helical spring against compressing force until the coils of the
spring are in contact
(Solved)
Sketch a graph of length of a helical spring against compressing force until the coils of the
spring are in contact
Date posted:
April 4, 2019
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Answers (1)