What type of motion does the skin of a talking drum perform when its being struck with the drum stick?
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2002
The force between the molecules of a liquid in contact with that of a solid is
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2002
The magnitude of the force required to make an object of mass, m move with speed, v in a circular of radius r is given by the expression
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2002
A boy travels 8 km eastward to a point B and then 6km northward to another point C. Determine the difference between the magnitude of displacement of the boy and distance travelled by him
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2002
One common characteristics of solids, liquids and gasses is that
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2002
A solid weight 45N and 15N respectively in air and water. Determine the relative density of the solid
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2002
A reservoir is filled with a liquid of density 2000kgm-3. Calculate the depth at which the pressure in the liquid will equal to 9100Nm-2 [g = 10ms-2]
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2002
An object A is held in equilibrium as illustrated in the diagram above. Using the data on the diagram determine the magnitude, W of the weight of
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2002
An object is acted upon by a system of parallel forces causing the object to be in static equilibrium. Which of the following statements is not correct?
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2002
An object is released from rest at a height of 25m. Calculate the time it takes to fall to the ground. [g = 10ms-2]
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2002
A man was moving round a circular path continuously for 4 minutes and covered the following distances in the times stated : Distance (in metres) 200, 400, 600, 300Time(in minutes) : 1, 2, 3, 4 respectively. Which of the…
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2002
A block and tackle system has 6 pulleys. If the efficiency of the machine is 60%, determine its mechanical advantages
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2002
a load of mass120kg is raised vertically through a height of 2m in 30s by a machine whose efficiency is 100%. Calculate the power generated by the machine. [g = 10ms-2]
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2002
Which of the following statements correctly defines quantitatively the work done by a force? the product of the force and the distance moved
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2002
In the diagram above, AB represents a uniform rod of length 1.50m which is in equilibrium on a pivot at P, If AP = 40cm, calculate the mass of the rod. [g = 10ms-2]
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2002
A spiral spring of natural length 30.0cm and force constant of 20Nm-1 is compressed to 20.0cm. Calculate the energy stored in the spring
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2002
Water of mass 120g at 50oC is added to 20og of water at 10oC and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]
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2002
The silver coating on the inside of a vacuum flask reduces heat loss by
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2002
The ice and steam points of a certain thermometer are -20o and 100o respectively. Calculate the Celsius temperature temperature corresponding to 70o on the thermometer
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2002
Which of the following actions will improve the efficiency of the pulley system?