Which of the following is not a property of a ceramic such as alumina?
(a) A high melting temperature
(b) A high resistance to fracture
(c) It is a good insulator.
(d) It is inorganic.
(b) A high resistance to fracture
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Uncharged particles in an atom are called ________.
A. neutrinos B. protons C. positrons D. electrons E. neutrons
A traveler pulls on a suitcase strap at an angle 36° above the horizontal. If of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
A) 75 N B) 61 N C) 85 N D) 92 N
An electroscope is charged positively as indicated by foil leaves that stand apart. As a negative charge is brought close to the electroscope, the leaves become
A) closer together. B) farther apart. C) motionless.
When you look into a pool of water, the depth looks less than it actually is because of
a. interference. b. diffraction. c. specular reflection. d. refraction. e. polarization.