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- a)(i) Taking the radius of the earth, R= 6370km and p = 22/7, calculate the shortest distance between
the two cities P(60oN, 29oW) and Q(60oN, 31oE)...(Solved)
a)(i) Taking the radius of the earth, R= 6370km and π = 22/7, calculate the shortest distance between
the two cities P(60oN, 29oW) and Q(60oN, 31oE) along the parallel of latitude.
(ii) If it is 1200hrs at P, what is the local time at Q
(b)An aeroplane flew due south from a point A (60oN, 45oE) to a point B. the distance covered by
the aeroplane was 800km. determine the position of B.
Date posted: September 18, 2019.
- The photograph labeled K is an intact mammalian heart while photograph K1 and K2are sections of a mammalian heart .Examine them(Solved)
The photograph labeled K is an intact mammalian heart while photograph K1 and K2are sections of a mammalian heart .Examine them
The vessels labeled A and B drains blood in a chamber that leads to another chamber labeled J. The blood vessel labeled 3 drains blood into the chamber labeled L. When water is pumped under low pressure through vessel 3, it flows out through the vessel labeled 4. When water is pumped under low pressure through vessels A and B it flows out through the vessel labeled 2.
i. Name the chambers labeled Land J
ii. Name the blood vessels 2,3 and 4.
iii. Observe the walls of chamber J and those of chamber N in the sections of the heart. Account for the difference in the thickness of the walls.
iv. Name the structure labeled H and state its role.
Date posted: September 18, 2019.
- The diagram below shows a circle ABCDE. The line FEG is a tangent to the circle at point E. Line DE is parallel to CG,...(Solved)
The diagram below shows a circle ABCDE. The line FEG is a tangent to the circle at point E. Line DE is parallel to CG, ∠DEC = 28o and ∠AEG = 32o.
Calculate:
(a) ∠AEG
(b) ∠ABC
Date posted: September 18, 2019.
- The following distribution shows the masses to the nearest kilogram of 50 pupils in standard 8.
Calculate the standard deviation.(Solved)
The following distribution shows the masses to the nearest kilogram of 50 pupils in standard 8.
Calculate the standard deviation.
Date posted: September 18, 2019.
- The photographs below show specimens of different types of fruits. Examine them.(Solved)
The photographs below show specimens of different types of fruits. Examine them.
a) State the differences between specimens P and R
b) State the types of gynoecium and placentation of specimens P,S and V.
Specimen P:Gynoecium
Placentation
Specimen S Gynoecium
Placentation.
Specimen V Gynoecium.
Placentation
Name the mode of dispersal for each specimen and the features that adapt the specimen its mode of dispersal.
Date posted: September 18, 2019.
- Make x the subject of the formula:(Solved)
Make x the subject of the formula:
![fig4918920191322.png](/questions/uploads/fig4918920191322.png)
Date posted: September 18, 2019.
- Solve for ? in the equation(Solved)
Solve for θ in the equation
![fig4718920191317.png](/questions/uploads/fig4718920191317.png)
Date posted: September 18, 2019.
- The expression 1 + x/2 is taken as an approximation for v1 + x. Find the percentage error in doing so if x = 0.44.(Solved)
The expression 1 + x/2 is taken as an approximation for √1 + x. Find the percentage error in doing so if x = 0.44.
Date posted: September 18, 2019.
- Using logarithms, evaluate correct to 4d.p.(Solved)
Using logarithms, evaluate correct to 4d.p.
![fig4118920191249.png](/questions/uploads/fig4118920191249.png)
Date posted: September 18, 2019.
- Kisumu bus park allows 10m2 of parking space for each matatu and 30m2 for each bus. The total space
available is 3000m2. the maximum...(Solved)
Kisumu bus park allows 10m2 of parking space for each matatu and 30m2 for each bus. The total space
available is 3000m2. the maximum number of vehicles at any time must not exceed 20. There must be
at least as many matatus as buses. If the number of matatus is x and buses is y.
a) Write down three inequalities which must be satisfied.
b) On the grid provided, draw a graph to represent the in equalities in (a)
c)If the parking charge for a matatu is sh. 50 and for a bus is sh. 250, find how many vehicles of
each kind that should be admitted to maximize income.
d) Calculate the income in (c) above.
Date posted: September 18, 2019.
- The table below shows the corresponding values of x and y which are connected by a relation of the
form y = abx -10, where...(Solved)
The table below shows the corresponding values of x and y which are connected by a relation of the
form y = abx -10, where a and b are constant.
Draw a suitable linear graph and find the appropriate numerical values
of a and b
Date posted: September 18, 2019.
- The diagram below represents a set up that was used for electrolysis of aqueous copper (II) nitrate.(Solved)
The diagram below represents a set up that was used for electrolysis of aqueous copper (II) nitrate.
A gas that relights a glowing splint was produced at electrode A.
i) Which electrode is the cathode ? Explain.
ii) State another suitable method for collecting gas X.
iii) Write ionic equations to show reactions that take place at the :
Anode
Cathode
iv) Explain how the identity of the product at the cathode of this electrolysis can be confirmed.
v) Calculate the mass of copper deposited if a constant current of 5 A was passed for 3 hours. (Cu = 63.5, IF = 965000)
Date posted: September 18, 2019.
- Students carried an experiment and arranged their apparatus as shown below, to investigate a certain phenomenon.The set up was placed in light.(Solved)
Students carried an experiment and arranged their apparatus as shown below, to investigate a certain phenomenon.The set up was placed in light.
a) State the likely aim of the set up
b) State the role of the syringe in the set-up above
c) (i) Name gas X.
(ii) Write an equation to show how gas X was formed in the set-up.
d) State three factors that increase the rate of enzyme activity.
(e) Give a reason why the test tube is immersed in a beaker of water.
Date posted: September 18, 2019.
- The figure below is a tetrahedron. The base triangle ABC is right angled at B. AB = 16 cm and BC = 6cm....(Solved)
The figure below is a tetrahedron. The base triangle ABC is right angled at B. AB = 16cm and BC = 6cm. DA = DB = DC = 13cm. M is the mid point of line AB and DO is the height of the tetrahedron.
Calculate
(i) The height DO of the tetrahedron.
(ii) The height OM
(iii) The length DM.
Date posted: September 18, 2019.
- The heights of a tree seedling in a nursery were measured and recorded as in the table below.
a)Estimate the mean height of the tree seedlings...(Solved)
The heights of a tree seedling in a nursery were measured and recorded as in the table below.
a)Estimate the mean height of the tree seedlings in the nursery.
b)Using a scale of 1cm to represent 10units a long the horizontal axis, and a scale of 1cm to represent 1
unit along the vertical axis, draw a histogram to represent the distribution.
Date posted: September 18, 2019.
- Identify four differences between full-flow and By-pass filters.(Solved)
Identify four differences between full-flow and By-pass filters.
Date posted: September 18, 2019.
- List three advantages of wankel rotary engine over the conventional reciprocating piston type.(Solved)
List three advantages of wankel rotary engine over the conventional reciprocating piston type.
Date posted: September 18, 2019.
- State the functions of the following in a vehicle.
a) Final drive unit
b) Clutch
(Solved)
State the functions of the following in a vehicle .
a) Final drive unit
b) Clutch
Date posted: September 18, 2019.
- The figure below shows an isometric drawing of a machine component. Draw FULL SIZE, in first projection the following views in the drawing paper provided.(Solved)
The figure below shows an isometric drawing of a machine component. Draw FULL SIZE, in first projection the following views in the drawing paper provided.
a) Sectional front elevation B-B .
b) The plan.
c) Include 3 important dimensions.
Do not show hidden details
![ISOMER.png](/questions/uploads/ISOMER.png)
Date posted: September 18, 2019.
- Study the table below and answer the questions that follow. The letters do not represents the actual symbols of the elements(Solved)
Study the table below and answer the questions that follow. The letters do not represents the actual symbols of the elements.
Select elements found in:
(a) (i) The same group
(ii) Period three
(iii) What is the family name given to the group to which elements identified in a(i) above belongs.
(b) How does the atomic radius of element B and A compare. Explain.
(c) State two industrial use of element B.
(d) With reason, compare the reactivity of C and D.
(e) Write the formula of compound formed when A and D react.
(f) What type of bond is formed when element E react with oxygen. Give a reason for your answer.
Date posted: September 18, 2019.
- State two functions of each of the following vehicle systems .
i) suspension system
ii) steering system
iii) braking system(Solved)
State two functions of each of the following vehicle systems .
i) suspension system
ii) steering system
iii) braking system
Date posted: September 18, 2019.
- What is Ecdysis?(Solved)
What is Ecdysis?
Date posted: September 18, 2019.
- Explain each of the following terms as used in power mechanics
i) Detonation
ii pre- ignition
iii) Atomization(Solved)
Explain each of the following terms as used in power mechanics
i) Detonation
ii pre- ignition
iii) Atomization
Date posted: September 18, 2019.
- State two types of fire extinguishers used to put out a burning carburetor.(Solved)
State two types of fire extinguishers used to put out a burning carburetor.
Date posted: September 18, 2019.
- Examine the diagram shown below and answer questions that follow.(Solved)
Examine the diagram shown below and answer questions that follow.
(i) What does the diagram represent?
(ii) Name parts labeled.
A
B
E
Date posted: September 18, 2019.
- Identify two advantages of a pressurized water cooling system over thermo-siphon cooling system.(Solved)
Identify two advantages of a pressurized water cooling system over thermo-siphon cooling system.
Date posted: September 18, 2019.
- State two possible causes why a petrol engine would emit white or light blue smoke at its exhaust pipe.(Solved)
State two possible causes why a petrol engine would emit white or light blue smoke at its exhaust pipe.
Date posted: September 18, 2019.
- State two requirements for combustion in a diesel engine.(Solved)
State two requirements for combustion in a diesel engine.
Date posted: September 18, 2019.
- Give two reasons why bearings are necessary.(Solved)
Give two reasons why bearings are necessary.
Date posted: September 18, 2019.
- State two possible causes of a clutch slip.(Solved)
State two possible causes of a clutch slip.
Date posted: September 18, 2019.