Physics, 23.10.2020 20:10, janeou17xn
U (a) What is surface tension? Explain the
phenomenon in terms of intermolecular
forces.
(b) Describe a simple experiment to demonstrate
the surface tension of a liquid.
(c) State three examples to illustrate the effects
of surface tension.
(d) Why does water wet a clean glass surface
whereas mercury does not?
(e) State two methods by which the surface
tension of a liquid may be reduced.
(SSCE)
Answers: 3
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As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy
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When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
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U (a) What is surface tension? Explain the
phenomenon in terms of intermolecular
forces.
...
forces.
...
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