Clockwise movements = Anticlockwise moments.
30 x 11 = F x 1.5
F = 220N
Kavungya answered the question on May 31, 2019 at 05:15
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A transformer is designed to supply a current of 12A at a p.d. of 80V. The inlet cable is to be connected to an a.c....
(Solved)
A transformer is designed to supply a current of 12A at a p.d. of 80V. The inlet cable is to be connected to an a.c. mains of
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ii) The power supplied to the transfer.
Date posted:
May 30, 2019
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Answers (1)
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May 30, 2019
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May 30, 2019
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Date posted:
May 30, 2019
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Answers (1)
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A heater is rated 3kW, 240V. The fuses available are marked 10A, 13A and 20A. Which fuse is most suitable?
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Date posted:
May 30, 2019
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The figure below shows a pin 60mm long placed a long the principal axis of a lens of focal length 50mm. The near end of...
(Solved)
The figure below shows a pin 60mm long placed a long the principal axis of a lens of focal length 50mm. The near end of the pin is 80mm form the lens.
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Date posted:
May 30, 2019
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Answers (1)
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How many electric iron boxes rated 1000W could be safely connected to a 240V mains circuit fitted with a 13A fuse?
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Date posted:
May 30, 2019
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Answers (1)
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A ferromagnetic material is being magnetised by single stroking method. On the axes provided, sketch a graph to show how
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(Solved)
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Date posted:
May 30, 2019
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Answers (1)
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A metal cube weighs 1.0N in air and 0.8N when totally immersed in water.
Calculate
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(ii) the density of the cube
(Solved)
A metal cube weighs 1.0N in air and 0.8N when totally immersed in water.
Calculate
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Date posted:
May 30, 2019
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Answers (1)
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An object is attached to a spring balance and its weight determined in air. It is then gently lowered into a beaker containing water.
(i) State...
(Solved)
An object is attached to a spring balance and its weight determined in air. It is then gently lowered into a beaker containing water.
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Date posted:
May 30, 2019
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Answers (1)
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(Solved)
A boy on a bicycle accelerated uniformly at 1m/s2 for 10 seconds from an initial velocity of 4m/s. Calculate the distance travelled in this time.
Date posted:
May 30, 2019
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Answers (1)
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Carbon dioxide is used to make fizzy drinks. It is stored in high pressure in cast iron cylinder. The figure below represents the
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(Solved)
Carbon dioxide is used to make fizzy drinks. It is stored in high pressure in cast iron cylinder. The figure below represents the
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Describe how particles of carbon dioxide exert pressure.
Date posted:
May 30, 2019
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Answers (1)
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Explain what happens to the soap bubble when the soap is removed.
(Solved)
The figure below shows a funnel dipped into a liquid soap solution.
Explain what happens to the soap bubble when the soap is removed.
Date posted:
May 30, 2019
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Answers (1)
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A solid displaces 8.5cm³ of liquid when floating on a certain liquid and 11.5cm³ when fully submerged with liquid. The
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i)...
(Solved)
A solid displaces 8.5cm³ of liquid when floating on a certain liquid and 11.5cm³ when fully submerged with liquid. The
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Date posted:
May 30, 2019
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Answers (1)
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The figure below shows an empty beaker placed on the top of a pan calibrated in grammes. 50ml of alcohol of density 0.8g/cm3 was added...
(Solved)
The figure below shows an empty beaker placed on the top of a pan calibrated in grammes. 50ml of alcohol of density 0.8g/cm3 was added to the beaker.
Show on the figure the new pointer position.
Date posted:
May 30, 2019
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Answers (1)
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The figure shows a piece of cork held with a light thread attached to the bottom of a beaker. The beaker is filled with
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i) Indicate...
(Solved)
The figure shows a piece of cork held with a light thread attached to the bottom of a beaker. The beaker is filled with
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Date posted:
May 30, 2019
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Answers (1)
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On the set of axes below show how the volume of an ideal gas varies with pressure.
(Solved)
On the set of axes below show how the volume of an ideal gas varies with pressure.
Date posted:
May 30, 2019
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Answers (1)
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The figure below shows a ball being whirled in a vertical plane.
Sketch on the figure the path followed by the ball if the string cuts...
(Solved)
The figure below shows a ball being whirled in a vertical plane.
Sketch on the figure the path followed by the ball if the string cuts when the ball is in the position shown in the figure.
Date posted:
May 30, 2019
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Answers (1)
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A motor car is uniformly retarded and brought to rest from a speed of 108 km/h in 15 sec. Find its acceleration.
(Solved)
A motor car is uniformly retarded and brought to rest from a speed of 108 km/h in 15 sec. Find its acceleration.
Date posted:
May 30, 2019
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Answers (1)
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The figure shows an instrument used to measure atmospheric pressure.
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(Solved)
The figure shows an instrument used to measure atmospheric pressure.
a) Name the instrument.
b) Name the liquid marked L.
Date posted:
May 30, 2019
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Answers (1)