K.C.S.E Physics Q & A - MODEL 2019PP1QN11
A stone of volume 800 cm3 experiences an upthrust of 6.5N when fully immersed in a certain liquid. Determine the density of the liquid.
answer
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 K.C.S.E Physics Q & A - MODEL 2016PP1QN09
​The three springs shown in figure 5 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
​Determine the constant of each spring
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K.C.S.E Physics Q & A - MODEL 2015PP1QN03
​A spring extends by 6 cm when supporting a mass of 0.06 kg on earth. When the spring is used to support the same mass on the moon, it extends by 1 cm. Determine the moon’s gravitational strength. (Take gravitational field strength on earth as 10 Nk/g)
ANSWER
K.C.S.E Physics Q & A - MODEL 2014PP1QN10
​A light spiral spring extends by 4 mm when loaded with a weight W. The spring is connected in series with an identical spring. The combination is loaded with the weight W. Determine the extension of the combination.
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K.C.S.E Physics Q & A - MODEL 2013PP1QN05
State two measurements you would take in an experiment to determine the upthrust of an object which is immersed in a fluid.
State how the measurements in question (5) are used to determine the upthrust of the object.
answer
5. Weight of object in air
Weight of object when fully immersed in fluids 6. Upthrust = weight in air - weight of object in fluid. K.C.S.E Physics Q & A - MODEL 2013PP1QN04
​An object of weight 20 N attached at the end of a spring causes an extension of 0.5 cm on the spring.
(a) Determine the spring constant of the spring. (b) Determine the weight of an object that would cause an extension of 0.86 cm when attached at the end of the same spring.
answer
K.C.S.E Physics Q & A - MODEL 2008PP1QN13
​The graphs in Fig. 7 represent the relations between extension e and mass m added on two springs x and y.
Given that the two springs are made of same materials, give a reason why the graphs are different.
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K.C.S.E Physics Q & A - MODEL 2004PP1QN29
​A body mass 0.50kg is attached to the end of a string of length 50cm and whirled in a horizontal circle. If the tension in the string is 81N, determine the velocity of the body
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K.C.S.E Physics Q & A - MODEL 2004PP1QN10
State one way of reducing surface tension in water.
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K.C.S.E Physics Q & A - MODEL 2002PP1QN17
Name two factors other than tension, which determine the frequency of sound form stretched wire at room temperature.
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K.C.S.E Physics Q & A - MODEL 2001PP1QN28
​Fig. 19 shows two spheres made of wax each of mass 0.10kg held in a liquid by strings A and B.
If the upthrust on each sphere is 1.05N, determine the tension in each string.(acceleration due to gravity g = 10ms-2)
answer
K.C.S.E Physics Q & A - MODEL 1999PP1QN11
A wire fixed at one end extends by 4mm when a load of 20N is suspended from the other end. Determine the load that would cause an extension of 1.5 mm on the wire (assume elastic limit is not exceeded)
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