When an atom loses or gains a charge, it becomes an
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1994
Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity?
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1994
A motor vehicle is brought to rest from a speed of 15ms-1 in 20 seconds. Calculate the retardation.
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1994
An object is projected with a velocity of 80ms-1 at an angle of 30o to the horizontal.The maximum height reached is
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1994
A boat travels due east at a speed 40ms-1s across a river flow due south at 30ms-1s. What is the resultant speed of the boat?
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1994
If it takes 5.0 hrs to drain a container of 540.0cm3 of water, what is the flow rate of water from the container in kg-1? [Density of water = 1000kgm-3]
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1994
A force of 15N stretches a spring to a total length of 30cm. An additional force of 10N stretches the spring 5cm further. Find the natural length of the spring
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1994
Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm
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1994
Calculate the magnitude of the force required to just move a 20kg object along a horizontal surface if the coefficient of friction is 0.2. [g = 10ms-2]
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1994
A cone in an unstable equilibrium has its potential energy
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1994
An object of mass 50kg is released from a height of 2m.Find the kinetic energy just before it strikes the ground
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1994
A Motor Tyre is inflated to pressure of 2.0 x 105Nm-2 when the temperature of air is 27oC. What will be the pressure in it at 87oC assuming that the volume of the Tyre does not change?
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1994
The melting point of naphthalene is 78oC. What is this temperature in kelvin
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1994
If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the
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1994
The mass of a specific gravity bottle is 15.2g when it is empty. it is 24.8g when filled with kerosene and 27.2g when filled with distilled water. Calculate the relative density of kerosene
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1994
Which of these statements are TRUE of pressure in liquids? i. pressure acts equally in all direction. ii. pressure decreases with depth. iii. pressure at the same level of a liquid is the same. iv pressure is dependent o…
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1994
The equation of transverse wave traveling along a string is given by Y = 0.3 sin(0.5x - 50t) where Y and X are in cm and t is in seconds.Find the maximum displacement of the particles from the equilibrium position
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1994
Two similar kettles containing equal masses of boiling water are placed on a table. If the surface of one is highly polished and the surface of the other is covered with soot, Which of the following observations is corre…
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1994
If a room is saturated with water vapour, the temperature of the room must be