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- Solve the equation(Solved)
Solve the equation
![Q42282019531.png](/questions/uploads/Q42282019531.png)
Date posted: August 22, 2019.
- What is the time in Hola 40oE when the time in Accra 0o Longitude is 3p.m?(Solved)
What is the time in Hola 40oE when the time in Accra 0o Longitude is 3p.m?
Date posted: August 22, 2019.
- Use logarithms to evaluate the following correct to 4 decimal places.(Solved)
Use logarithms to evaluate the following correct to 4 decimal places.
![Q32282019524.png](/questions/uploads/Q32282019524.png)
Date posted: August 22, 2019.
- State two layers of atmosphere which experience Negative Lapse Rate.(Solved)
State two layers of atmosphere which experience Negative Lapse Rate.
Date posted: August 22, 2019.
- Two spherical balls of radii 14cm and 7cm are in contact resting on a horizontal floor.
A straight metal bar is placed on top of the...(Solved)
Two spherical balls of radii 14cm and 7cm are in contact resting on a horizontal floor.
A straight metal bar is placed on top of the balls such that it is in contact with them.
Calculate the angle of inclination of the bar to the horizontal.
Date posted: August 22, 2019.
- Differentiate between equinox and solstice.(Solved)
Differentiate between equinox and solstice.
Date posted: August 22, 2019.
- Evaluate the expression below.(Solved)
Evaluate the expression below.
![Q12282019509.png](/questions/uploads/Q12282019509.png)
Date posted: August 22, 2019.
- Explain four ways in which human activity have affected rivers in Kenya(Solved)
Explain four ways in which human activity have affected rivers in Kenya
Date posted: August 22, 2019.
- Outline three evidence of soil creep(Solved)
Outline three evidence of soil creep.
Date posted: August 22, 2019.
- A girl performed an experiment to measure the focal length of a converging mirror.In the experiment, a series of object distance,U(cm) and image distance V(cm)...(Solved)
A girl performed an experiment to measure the focal length of a converging mirror.In the experiment, a series of object distance,U(cm) and image distance V(cm) were obtained and the graph UV cm2 against V+U obtained as shown below.
Use the graph to determine:
i) Focal length of the mirror.
ii) Radius of curvature.
iii) State two applications of diverging mirror.
iv) Explain how a concave mirror is used by a dentist to enlarge image of the tooth.
Date posted: August 22, 2019.
- The instrument below is used to measure an element of weather .Study it and answer the questions below(Solved)
The instrument below is used to measure an element of weather .Study it and answer the questions below.
i) Name the liquid marked X.
ii) Identify the instrument above.
iii).Describe how the instrument works.
Date posted: August 22, 2019.
- If the time at 1200E is 3.00 pm Friday what is the local time and day at longitude 1650E.(Solved)
If the time at 1200E is 3.00 pm Friday what is the local time and day at longitude 1650E.
Date posted: August 22, 2019.
- The diagram below shows the sun, earth and the orbit of the moon round the earth. Study it and answer the questions that follow.i) At...(Solved)
The diagram below shows the sun, earth and the orbit of the moon round the earth. Study it and answer the questions that follow.
i) At what position is the moon likely to be for a solar eclipse to occur.
ii) At what position is the moon likely to be for a lunar eclipse to occur.
Date posted: August 22, 2019.
- Solve for value of x if sin(3x+20) = cos 4x(Solved)
Solve for value of x if sin(3x+20) = cos 4x
Date posted: August 22, 2019.
- A test tube is made up of hemispherical bottom and a cylindrical stem. Both of internal radius 0.7cm. Calculate the capacity of the test tube...(Solved)
A test tube is made up of hemispherical bottom and a cylindrical stem. Both of internal radius 0.7cm. Calculate the capacity of the test tube given that its height is 12cm
Date posted: August 22, 2019.
- Given the points P(-6,-3) Q(-2,-1) and R(6,3) Express PQ and QR as column Vectors. Hence show that the points P,Q and R are collinear.(Solved)
Given the points P(−6,−3) Q(−2,−1) and R(6,3) Express PQ and QR as column Vectors. Hence show that the points P,Q and R are collinear.
Date posted: August 22, 2019.
- Simplify completely(Solved)
Simplify completely
![pic22820191540.png](/questions/uploads/pic22820191540.png)
Date posted: August 22, 2019.
- The figure below shows a standing wave formed when a string of length 1.5 m stretched between two supports is plucked in the middle.(Solved)
The figure below shows a standing wave formed when a string of length 1.5 m stretched between two supports is plucked in the middle.
(i) Explain how the standing wave is formed
(ii) Determine the wavelength of the standing wave
Date posted: August 22, 2019.
- The figure below shows crests of circular water waves spreading from two points A and B due to a vibrator. C and D are points...(Solved)
The figure below shows crests of circular water waves spreading from two points A and B due to a vibrator. C and D are points on the surface of the water.
Given that the amplitude of each wave is 5 cm, state with a reason the amplitudes of the waves at point:
(i) C
(ii) D
Date posted: August 22, 2019.
- The ratio of the area of two similar spheres is 16:25. If the volume of the smaller one is 195cm3 (Solved)
The ratio of the area of two similar spheres is 16:25. If the volume of the smaller one is 195cm3 .Find the volume of the large one to 1d.p.
Date posted: August 22, 2019.
- Mutoa bought 4 mangoes and 2 Banana at sh. 39 while Mueni bought 2 mangoes less and 2 Banana more than Mutoa at Sh 69....(Solved)
Mutoa bought 4 mangoes and 2 Banana at sh. 39 while Mueni bought 2 mangoes less and 2 Banana more than Mutoa at Sh 69. Determine the cost of each fruit.
Date posted: August 22, 2019.
- Sodium has a work function of 2.3eV. Given that: Planck’s constant h = 6.63 x 10-34JS, velocity of light in vacuum, C = 3.0 x108m/s,...(Solved)
Sodium has a work function of 2.3eV. Given that: Planck’s constant h = 6.63 x 10-34JS, velocity of light in vacuum, C = 3.0 x108m/s, 1 electron-volt (1eV) = 1.6 x 10-19 C and mass of an electron, me = 9.1 x 10-31kg, calculate:
(i) Its threshold frequency.
(ii) The maximum velocity of the photoelectrons produced when the sodium is illuminated by light of wavelength 5.0 x 10-7m.
(iii) The stopping potential V, with the light of this wavelength.
Date posted: August 22, 2019.
- The line passing through the point B(1,-2) is parallel to the line whose equation is -2x + 3y = 5. Find the equation of the...(Solved)
The line passing through the point B(1,-2) is parallel to the line whose equation is -2x + 3y = 5. Find the equation of the line and hence determine the coordinates of point P where this line cuts the equation y = 0
Date posted: August 22, 2019.
- Use table of reciprocal to find the value of X given that(Solved)
Use table of reciprocal to find the value of X given that
![pic22820191512.png](/questions/uploads/pic22820191512.png)
Date posted: August 22, 2019.
- Without using calculator, evaluate the following(Solved)
Without using calculator, evaluate the following
![pic22820191508.png](/questions/uploads/pic22820191508.png)
Date posted: August 22, 2019.
- Two aeroplanes P and Q, leave an airport at the same time. P flies on a bearing of 2400 at 900km/h while Q flies due...(Solved)
Two aeroplanes P and Q, leave an airport at the same time. P flies on a bearing of 2400 at 900km/h while Q flies due east at 750 km/h.
a) Using a scale of 1 cm to represent 100 km, make a scale drawing to show the positions of the aeroplanes after 40 minutes.
b) Use the scale drawing to find the distance between the two areoplanes after 40 minutes.
c) Determine the bearings of;
i. P from Q
ii. Q from P
Date posted: August 22, 2019.
- A G.M tube indicated a constant count rate of 5 counts per minute when a radioactive source was placed at a distance of about 10...(Solved)
A G.M tube indicated a constant count rate of 5 counts per minute when a radioactive source was placed at a distance of about 10 cm from it. When the source was moved close to about 4cm the count rate varied as follows.
(i) The count rate was constant at a distance of 10 cm away. Explain
(ii) Plot a graph of count rate against time.
(iii) Use your graph to estimate the half-life of the radioactive source.
(iv)
(v) State two precautions that have to be observed when using a radioactive substance.
(vi) Distinguish between fission and fusion.
Date posted: August 22, 2019.
- The following data was obtained from the mass of a certain animal. Complete the table and the histogram below.(Solved)
The following data was obtained from the mass of a certain animal. Complete the table and the histogram below.
![pic22820191448.png](/questions/uploads/pic22820191448.png)
Date posted: August 22, 2019.
- Solve the equation(Solved)
Solve the equation
![pic22820191442.png](/questions/uploads/pic22820191442.png)
Date posted: August 22, 2019.
- An investment group decided to raise Shs. 960 000 to buy a piece of land costing Kshs. 80 000 per hectare. Before they paid, four...(Solved)
An investment group decided to raise Shs. 960 000 to buy a piece of land costing Kshs. 80 000 per hectare. Before they paid, four of them pulled out and those that remained were supposed to pay an additional Kshs. 40 000.
a. If the initial number of members was 𝑥, write down;
i. An expression of what each was to contribute originally.
ii. An expression of what each of remaining members contributed.
b. Calculate the number of members who were initially in the group using the expression in (a) above.
c. If the land was sub divided equally, calculate what size each member got.
Date posted: August 22, 2019.