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In the diagram below, find the pressure of the air in the tube X in the mmHg. The liquid shaded is mercury and the atmospheric...
(Solved)
In the diagram below, find the pressure of the air in the tube X in the mmHg. The liquid shaded is mercury and the atmospheric pressure is 760mmHg.
Date posted:
May 27, 2019
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Answers (1)
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The paddle wheel in the diagram below is made of a light material and fixed on a well oiled pivot.
What will happen to the wheel...
(Solved)
The paddle wheel in the diagram below is made of a light material and fixed on a well oiled pivot.
What will happen to the wheel when water is being heated?
Date posted:
May 27, 2019
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Answers (1)
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Name and explain the features that make a retort stand stable.
(Solved)
Name and explain the features that make a retort stand stable.
Date posted:
May 27, 2019
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Answers (1)
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Determine the reading on the vernier calliper shown in the figure below.
(Solved)
Determine the reading on the vernier calliper shown in the figure below.
Date posted:
May 27, 2019
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Answers (1)
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The figure below shows an image formed by concave mirror. Complete by drawing rays and locate the position of the object.
(Solved)
The figure below shows an image formed by concave mirror. Complete by drawing rays and locate the position of the object.
Date posted:
May 27, 2019
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Answers (1)
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The figure below represents crests of straight wave produced in a ripple tank.
Determine the wavelength of the waves.
(Solved)
The figure below represents crests of straight wave produced in a ripple tank.
Determine the wavelength of the waves.
Date posted:
May 27, 2019
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Answers (1)
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Arrange the following electromagnetic waves in order of their increasing wavelengths.X-rays, Gamma rays, Ultraviolet, Visible light, Microwaves, Infra red.
(Solved)
Arrange the following electromagnetic waves in order of their increasing wavelengths.X-rays, Gramma rays, Ultraviolet, Visible light, Microwaves, Infra red.
Date posted:
May 27, 2019
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Answers (1)
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The waves have a speed of 0.12 m/s in the deep water. Wave crests are 0.08 apart to the deep water. Calculate the frequency of...
(Solved)
The waves have a speed of 0.12 m/s in the deep water. Wave crests are 0.08 apart to the deep water. Calculate the frequency of the source producing the waves.
Date posted:
May 27, 2019
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Answers (1)
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The threshold frequency of sodium is 5.6 x 1014Hz. Planck's constant = 6.6 x 10-34Js. Find;(i) Work function of sodium (ii) The kinetic energy of...
(Solved)
The threshold frequency of sodium is 5.6 x 1014Hz. Planck's constant = 6.6 x 10-34Js. Find;
(i) Work function of sodium
(ii) The kinetic energy of the ejected electrons when sodium is shone with light of frequency 8.6 x 1014Hz.
Date posted:
May 27, 2019
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Answers (1)
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You are provided with two identical cells. Two lamps and a switch.
(i) Draw a circuit diagram that would ensure that the bulbs have maximum brightness....
(Solved)
You are provided with two identical cells. Two lamps and a switch.
(i) Draw a circuit diagram that would ensure that the bulbs have maximum brightness.
(ii) State one advantage of using such an arrangement in (i) above to light a whole house with many bulbs.
Date posted:
May 27, 2019
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Answers (1)
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Using the circuit shown in figure below, calculate the effective capacitance.
(Solved)
Using the circuit shown in figure below, calculate the effective capacitance.
Date posted:
May 27, 2019
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Answers (1)
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Two springs of negligible weight of spring constant K1 = 24 N/m and K2 = 48 N/m respectively
are connected end to end and suspended from...
(Solved)
Two springs of negligible weight of spring constant K1 = 24 N/m and K2 = 48 N/m respectively
are connected end to end and suspended from a fixed point as shown below.
Determine;
I the total extension when a mass of 1.2 kg is hung from the lower end.
II the constant of the combination
Date posted:
May 27, 2019
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Answers (1)
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The figure below shows a horizontal tube with two vertical tubes X and Y of equal diameter. Water flows through the horizontal tube from right...
(Solved)
The figure below shows a horizontal tube with two vertical tubes X and Y of equal diameter. Water flows through the horizontal tube from right to left.
(i) Indicate the water levels in the tube X and tube Y.
(ii) Explain your observation in (i)
Date posted:
May 27, 2019
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Answers (1)
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State one advantage of an electromagnet as compared to a permanent magnet.
(Solved)
State one advantage of an electromagnet as compared to a permanent magnet.
Date posted:
May 27, 2019
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Answers (1)
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An immersion water heater rated 1800 w is used to heat water from 100C to 900C. Calculate the time taken, if the mass of water...
(Solved)
An immersion water heater rated 1800 w is used to heat water from 100C to 900C. Calculate the time taken, if the mass of water is 6 kg. (Take specific heat capacity of water as 4200J kg -1K-1)
Date posted:
May 27, 2019
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Answers (1)
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A student heated some pure water and noticed it boiled at 960C instead of 1000C. If the thermometer was not faulty, what is the possible...
(Solved)
A student heated some pure water and noticed it boiled at 960C instead of 1000C. If the thermometer was not faulty, what is the possible cause for this?
Date posted:
May 27, 2019
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Answers (1)
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A cork of volume 200 cm3 is floating on water. If the density of the cork is 0.25 g/cm3.
Calculate;
(i) the mass of the cork.
(ii)...
(Solved)
A cork of volume 200 cm3 is floating on water. If the density of the cork is 0.25 g/cm3.
Calculate;
(i) the mass of the cork.
(ii) the upthrust force on the cork.
(iii) the minimum force required to immerse the cork completely.
Date posted:
May 27, 2019
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Answers (1)
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In the diagram below determine the weight of the metre rule shown below.
(Solved)
In the diagram below determine the weight of the metre rule shown below.
Date posted:
May 27, 2019
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Answers (1)
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An object of mass, m1 has weight, w1 in air and w2 in water. Explain which of two weights is greater than the other.
(Solved)
An object of mass, m1 has weight, w1 in air and w2 in water. Explain which of two weights is greater than the other.
Date posted:
May 27, 2019
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Answers (1)
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An object of density 9 x 102 and mass 1.8 kg is completely immersed in water. Calculate the mass of water displaced in kg. (Take...
(Solved)
An object of density 9 x 102 and mass 1.8 kg is completely immersed in water. Calculate the mass of water displaced in kg. (Take density of water as 1000 kg / m3)
Date posted:
May 27, 2019
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Answers (1)