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- Which one of the following would correctly describe the net realizable value of a two year old asset?(Solved)
Which one of the following would correctly describe the net realizable value of a two year old asset?
A. The original cost of the asset less two years' depreciation
B. The amount that could be obtained from selling the asset, less any costs of disposal
C. The cost of an equivalent new asset less two years' depreciation The present value of the future cash flows obtainable from continuing to use the asset
Date posted: September 10, 2019.
- Show by shading the unwanted region, the region which satisfies the following inequalities(Solved)
Show by shading the unwanted region, the region which satisfies the following inequalities
(b) calculate the area of this region in a square units
Date posted: September 10, 2019.
- Consider the chromatogram below.(Solved)
Consider the chromatogram below.
A piece of chromatogram paper was spotted with colour inks obtained from pens labeled A to F. The diagram above shows the spots after the chromatograph was developed.
(a) Which two pens contained the same pigment?
(b) According to the chromatogram which pigments are present in the inks of the pen number F
(c) Describe how one could get a sample of yellow pigment
Date posted: September 10, 2019.
- The tube of a CRO is coated with graphite. State three functions of the graphite coating(Solved)
The tube of a CRO is coated with graphite. State three functions of the graphite coating
Date posted: September 10, 2019.
- Five towns V,W,X,UY and Z are situated such that W is 200km east of V.(Solved)
Five towns V,W,X,UY and Z are situated such that W is 200km east of V. X is 300km from W on a bearing of 150o. Y is 350km on a bearing of 240o from X. Z is 150o from V but 200o from X.
Draw the diagram representing the position of the towns. ( use a scale of 1cm to represent 50km) .
(b) From the diagram determine
(i) the distance in km of V from Z
(ii) The bearing of Y from W
(c) A plane heading to town X takes off from town y and flies upwards of a constant angle which
is less than 90o. After flying a distance of 350km in the air it sees town x at an angle of depression of 50o. Calculate the distance of the plane from x at this point to the nearest km.
Date posted: September 10, 2019.
- A signal with a frequency of 50Hz is applied across the Y-plates. If the time base with a period of 0.04s is applied across the...(Solved)
A signal with a frequency of 50Hz is applied across the Y-plates. If the time base with a period of 0.04s is applied across the X-plates, sketch a graph of p.d against time showing the number of waves that can be seen on the screen of the C.R.O
Date posted: September 10, 2019.
- Find the scalars k and h(Solved)
Given that Km + hn = r and that
.
Find the scalars k and h
Date posted: September 10, 2019.
- Distinguish between cathode rays and light rays.(Solved)
Distinguish between cathode rays and light rays.
Date posted: September 10, 2019.
- The two sides of a triangle are given 6 cm and 5 cm. The angle between them is 130o.(Solved)
The two sides of a triangle are given 6 cm and 5 cm. The angle between them is 130o. Calculate the are of the triangle ( giving your answer to 2 decimal places)
Date posted: September 10, 2019.
- Simplify the expression below leaving your answer in rationalized surd form of a + bv??(Solved)
Simplify the expression below leaving your answer in rationalized surd form of a + b√𝑐
![q1210920191144.png](/questions/uploads/q1210920191144.png)
Date posted: September 10, 2019.
- In the figure below, angle ABE is equal to angle ADC, AE = 6cm, Ed = 9cm and AB = 8cm. (Solved)
In the figure below, angle ABE is equal to angle ADC, AE = 6cm, Ed = 9cm and AB = 8cm.
Calculate the length of BC
![q1110920191141.png](/questions/uploads/q1110920191141.png)
Date posted: September 10, 2019.
- The figure below show the displacement time graph of a wave traveling at 400cm/s.(Solved)
The figure below show the displacement time graph of a wave traveling at 400cm/s.
Determine for the wave the:
(i) Amplitude
(ii) Period
(iii) Frequency
(iv) Wavelength
Date posted: September 10, 2019.
- Use table of reciprocals only to work out:(Solved)
Use table of reciprocals only to work out:
![q1010920191138.png](/questions/uploads/q1010920191138.png)
Date posted: September 10, 2019.
- A cooker rated 2.0kW was operated for 40minutes each for 30days. If the cost of each kilo – watt – hour unit is Shs. 15.50,...(Solved)
A cooker rated 2.0kW was operated for 40minutes each for 30days. If the cost of each kilo – watt – hour unit is Shs. 15.50, Calculate the cost of electricity used.
Date posted: September 10, 2019.
- Using compass and ruler only construct a triangle Arc such that AB= 6cm ,BC = 5cm and angle ABC = 67.5o(Solved)
Using compass and ruler only construct a triangle Arc such that AB= 6cm ,BC = 5cm and angle ABC = 67.5o, measure the length of AC
Date posted: September 10, 2019.
- A wire of length 1.5m offers resistance of 6.5 ohms to the flow of current through it. If the cross section area is 5.0×10-6m2.calculate the...(Solved)
A wire of length 1.5m offers resistance of 6.5 ohms to the flow of current through it. If the cross section area is 5.0×10-6m2.calculate the resistivity of the material.
Date posted: September 10, 2019.
- Hydrazine gas, shown below, burns in oxygen to form nitrogen gas and steam.(Solved)
Hydrazine gas, shown below, burns in oxygen to form nitrogen gas and steam.
(a) Write an equation for the reaction
(b) Using the bond energies given below, calculate the enthalpy change for the reaction in (a) above
![Q1891020191126.png](/questions/uploads/Q1891020191126.png)
Date posted: September 10, 2019.
- Jemima’s team entered a contest where teams of students compete by answering questions that earn
either 3 points of 5 points.(Solved)
Jemima’s team entered a contest where teams of students compete by answering questions that earn either 3 points of 5 points. Jemima’s team scored 44 points after answering 12 questions correctly. How many
five-points questions did the team answer correctly.
Date posted: September 10, 2019.
- The figure below shows a trough which is 40 cm wide at the top and 25 cm wide at the bottom.(Solved)
The figure below shows a trough which is 40 cm wide at the top and 25 cm wide at the bottom. The trough is 20cm deep and 4.5 m long. Calculate the capacity of the trough in litres.
![q710920191127.png](/questions/uploads/q710920191127.png)
Date posted: September 10, 2019.
- A hunter standing some distance from a cliff blows a whistle and hears its echo 2 seconds later. How far is the cliff from the...(Solved)
A hunter standing some distance from a cliff blows a whistle and hears its echo 2 seconds later. How far is the cliff from the hunter? (speed of sound in air=340m/s)
Date posted: September 10, 2019.
- A student expanded ( x + y)2 incorrectly as x2+ y2(Solved)
A student expanded ( x + y)2 incorrectly as x2+ y2. Calculate the percentage error in the answer if x = 4 and y = 6
Date posted: September 10, 2019.
- Kenyatta National Hospital uses x-rays of wavelength 1×10-11m. Calculate the frequency of the x-rays. (Take c=3×108m/s.)(Solved)
Kenyatta National Hospital uses x-rays of wavelength 1×10-11m. Calculate the frequency of the x-rays. (Take c=3×108m/s.)
Date posted: September 10, 2019.
- An object is placed on the principal axis of a concave mirror. The image formed is upright and magnified. If the object distance is 5cm...(Solved)
An object is placed on the principal axis of a concave mirror. The image formed is upright and magnified. If the object distance is 5cm and the image distance is 10 cm, determine the focal length of the mirror.
Date posted: September 10, 2019.
- Without using table or calculators, evaluate(Solved)
Without using table or calculators, evaluate
![q310920191119.png](/questions/uploads/q310920191119.png)
Date posted: September 10, 2019.
- A fruit juice dealer sell the juice in packet of 300ml, 500ml and 750ml.(Solved)
A fruit juice dealer sell the juice in packet of 300ml, 500ml and 750ml. find the size of the smallest
container that can fill each of the packets and leave a remainder of 200ml
Date posted: September 10, 2019.
- A ray of light makes an angle of 60° with a plane mirror as shown in the figure below. The mirror is rotated through an...(Solved)
A ray of light makes an angle of 60° with a plane mirror as shown in the figure below. The mirror is rotated through an angle of 20° about the point O in a clockwise direction.
Determine the new angle of reflection.
Date posted: September 10, 2019.
- Evaluate the question below(Solved)
Evaluate
![q110920191115.png](/questions/uploads/q110920191115.png)
Date posted: September 10, 2019.
- A mason uses a six wheel pulley system to raise a weight of 250N through a vertical height of 2.5m using the machine.If the mason...(Solved)
A mason uses a six wheel pulley system to raise a weight of 250N through a vertical height of 2.5m using the machine.If the mason pulls using an effort of 500N. Calculate:
i) The velocity ratio of the pulley system.
ii) The work done by the mason.
iii) The useful work done by the pulley system.
iv) The efficiency of the system
Date posted: September 10, 2019.
- Z grammes of a radioactive isotope take 100 days to decay to 20gms. If the half – life of the element is 25 days.
Calculate the...(Solved)
Z grammes of a radioactive isotope take 100 days to decay to 20gms. If the half – life of the element is 25 days.
Calculate the initial mass of Z of the radio- isotope.
Date posted: September 10, 2019.
- The figure below shows a block of mass 50g and density 2000kg/m3 submerged in a certain liquid and suspended from uniform horizontal beam by means...(Solved)
The figure below shows a block of mass 50g and density 2000kg/m3 submerged in a certain liquid and suspended from uniform horizontal beam by means of a string. A mass of 40g suspended from the other end of the beam puts the system in equilibrium
(i) Determine the up-thrust force acting on the block.
(ii) Calculate the density of the liquid.
(iii) Calculate the new balance point of the 50g mass (the 40g mass remains fixed) if the liquid was replace with one whose density was 1500kg/m3.
Date posted: September 10, 2019.