2000
An electron of mass 9. 1 x 10\(^{-31}\) kg moves with a velocity of 4.2 x 10 ms\(^{-1}\) between the cathode and anode of an x-ray tube. Calculate the wavelength. (Take Planck's constant h = 6.6 x 10\(^{-34}\) J S)
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2000 WAEC SSCE Physics Past Questions
2000
During the electrolysis of copper (II) tetraoxosulphate (VI) solution, a steady current of 4.0 x 10\(^2\) A flowing for one hour liberated 0.48 g of copper. Calculate the mass of copper liberated by one coulomb of charge…
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2000
(a) Define angle of contact(b) Draw sketches to show angles of contact for a capillary tube dipped vertically in (i) water; (ii) mercury.
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2000
(a) Differentiate between interference and polarisation as applied to waves.(b) Mention two uses of polaroids
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2000
A force of 40 N is applied at the end of a wire 4m long and produces an extension of 0.24mm. If the diameter of the wire is 2.00mm, calculate the;(i) stress on the wire; (ii) strain in the wire.
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2000
Define (i) Elasticity; (ii) Young's modulus; (iii) Force constant.
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2000
State any three properties of matter which are common to all substances.
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2000
a) Define the term surface tension(b) Calculate the force required to lift a needle 4cm long off the surface of water if the surface tension of water is 7.3 x 10\(^{-4}\) NM\(^{-1}\)
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2000
What is a projectile? Give four examples of projectiles in everyday life
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2000
A body of mass 0.6kg is thrown vertically upward from the ground with a speed of 20ms\(^{-2}\). Calculate its;(i) potential energy at the maximum height reached.(ii) kinetic energy just before it hits the ground.
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2000
Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively
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