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The figure below shows a bimetallic strip made of brass and iron. A marble is placed at end A of the bimetallic strip as shown below:-
(Solved)
The figure below shows a bimetallic strip made of brass and iron. A marble is placed at end A of the bimetallic strip as shown below:-

State and explain what will be observed when the bimetallic strip is strongly cooled.
Date posted:
April 3, 2019
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Answers (1)
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What do you understand by the statement ‘lower fixed point’ on a temperature scale?
(Solved)
What do you understand by the statement ‘lower fixed point’ on a temperature scale?
Date posted:
April 3, 2019
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Answers (1)
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State two liquids which are used in thermometer
(Solved)
State two liquids which are used in thermometer.
Date posted:
April 3, 2019
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Answers (1)
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Figure shows a beam balance made out of concrete and reinforced with steel.
(Solved)
Figure shows a beam balance made out of concrete and reinforced with steel.

Use a diagram to explain the behaviour of the shape of the beam when heated up.
Date posted:
April 3, 2019
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Answers (1)
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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 a trough
(i) Calculate...
(Solved)
An oil drop of average diameter 0.7mm spreads out into a circular patch of diameter 75cm on the surface of water in a trough
(i) Calculate the average thickness of a molecule of oil
(ii) State two assumptions made in (i) above
Date posted:
April 3, 2019
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Answers (1)
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The diagram figure below shows a glass tube containing enclosed air by a thread of mercury 50mm
long when the tube is held in a horizontal...
(Solved)
The diagram figure below shows a glass tube containing enclosed air by a thread of mercury 50mm
long when the tube is held in a horizontal position.

(i) The tube is slowly raised in a vertical position with the open end facing up. Determine
the new length of the trapped air (tube has same area of cross-section; atmospheric pressure = 750mmHg)
(ii) Account for the difference in the column of trapped air using kinetic theory of matter assuming that temperature is constant.
Date posted:
April 3, 2019
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Answers (1)
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A partially filled balloon is placed in a bell jar with its open end on a thick glass plate
as shown in figure. The contact between...
(Solved)
A partially filled balloon is placed in a bell jar with its open end on a thick glass plate
as shown in figure. The contact between the jar and the glass plate is greased to make it air tight:

State and explain what happens to the balloon when air in the ball jar is slowly evacuated.
Date posted:
April 2, 2019
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Answers (1)
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You are provided with a long glass-tube, fitting corks, cotton wool, concentrated solution hydrochloric acid and concentrated ammonia solution.
(Solved)
You are provided with a long glass-tube, fitting corks, cotton wool, concentrated solution hydrochloric acid and concentrated ammonia solution.
(i) Draw a possible set-up to compare the rates of diffusion of ammonia gas and hydrochloric acid gas
(ii) Outline a clear procedure on how the experiment can be carried out.
(iii) What are the possible observations and conclusion
Date posted:
April 2, 2019
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Answers (1)
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Draw the cross-section of a basic solar heating panel that uses heat from the sun to warm
water which flows through pipes
(Solved)
Draw the cross-section of a basic solar heating panel that uses heat from the sun to warm
water which flows through pipes
Date posted:
April 2, 2019
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Answers (1)
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Distinguish between natural and forced convection currents.
(Solved)
Distinguish between natural and forced convection currents.
Date posted:
April 2, 2019
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Answers (1)
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The total weight of a car with passengers is 25,000N. The area of contact of each of the four
tyres with the ground is 0.025m2. Determine...
(Solved)
The total weight of a car with passengers is 25,000N. The area of contact of each of the four
tyres with the ground is 0.025m2. Determine the minimum car tyre pressure
Date posted:
April 2, 2019
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Answers (1)
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A block measuring 20cm x 10cm by 5cm rests on a flat surface. The block has a weight of 3N.
Determine the maximum pressure it exerts...
(Solved)
A block measuring 20cm x 10cm by 5cm rests on a flat surface. The block has a weight of 3N.
Determine the maximum pressure it exerts on the surface.
Date posted:
April 2, 2019
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Answers (1)
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The figure shows a liquid in a pail.
(Solved)
The figure shows a liquid in a pail.

Suggest a reason why pail manufacturers prefer the shape shown to other shapes
Date posted:
April 2, 2019
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Answers (1)
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Two immiscible liquids are poured in a container to the levels shown in the diagram below.
(Solved)
Two immiscible liquids are poured in a container to the levels shown in the diagram below.

If the densities of the liquids A and B are 1g/cm3 and 0.8g/cm3 respectively, find the pressure
acting upon solid C at the bottom of the container due to the liquids
Date posted:
April 2, 2019
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Answers (1)
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Figure below shows a measuring cylinder of height 30cm filled to a height of 20cm with water and the rest occupied by kerosene.
(Solved)
Figure below shows a measuring cylinder of height 30cm filled to a height of 20cm with water and the rest occupied by kerosene.

Given that density of water = 1000Kgm-3, density of kerosene = 800Kgm-3 and atmospheric pressure = 1.03x105 pascals, determine the pressure acting on the base of the container.
Date posted:
April 2, 2019
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Answers (1)
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The barometric height at sea level is 76cm of mercury while at a point on a highland it is 74cm of mercury. What is the...
(Solved)
The barometric height at sea level is 76cm of mercury while at a point on a highland it is 74cm of mercury. What is the altitude of the point? (Take g = 10m/s2 , density of mercury =
13600kg/m3 and density of air as 1.25kg/m3)
Date posted:
April 2, 2019
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Answers (1)
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State one factor that determines the depth to which mercury is depressed in a glass capillary tube.
(Solved)
State one factor that determines the depth to which mercury is depressed in a glass capillary tube.
Date posted:
April 2, 2019
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Answers (1)
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A bathroom shower has 200 holes each 2.5mm2 in area. Water flows from a pipe of cross-section
area of 15cm at 5m/s to the shower. Determine...
(Solved)
A bathroom shower has 200 holes each 2.5mm2 in area. Water flows from a pipe of cross-section
area of 15cm at 5m/s to the shower. Determine the speed of the spray.
Date posted:
April 2, 2019
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Answers (1)
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A piece of metal N of mass 2kg weighs 18N in water and 12N in liquid M. Determine the density of ;
(Solved)
A piece of metal N of mass 2kg weighs 18N in water and 12N in liquid M. Determine the density of ;
(i) The metal N
(ii) The liquid M
Date posted:
April 2, 2019
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Answers (1)
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A measuring cylinder contains 50cm3 of light oil at 0oC. When a lump of dried ice is placed in the oil, the total volume is...
(Solved)
A measuring cylinder contains 50cm3 of light oil at 0oC. When a lump of dried ice is placed in the oil, the total volume is 72cm3. Determine the density of the ice.
Date posted:
April 2, 2019
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Answers (1)