Ceramics are often used in high ______________applications.
Fill in the blank(s) with the appropriate word(s).
temperature
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Thermal Expansion: A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The average coefficient of linear expansion of this steel is 11 × 10-6 K-1.
A. 0.33 m B. 0.44 m C. 0.55 m D. 0.66 m
The chief erosive agent now on the Moon is
A) lunar ice melting and refreezing in the polar regions. B) lava flows welling up in the mare. C) volcanic vents in the rugged highlands. D) the rain of micrometeorites chewing up the regolith. E) rain from cometary debris melting as it enters the Moon's atmosphere.
Faraday's law of induction states that the emf induced in a loop of wire is proportional to
A) current divided by time. B) the magnetic flux. C) the time variation of the magnetic flux. D) the magnetic flux density times the loop's area.
A pencil inside a water glass appears to be bent because of
A. reflection of light. B. diffraction of light. C. refraction of light. D. None of these choices are correct.