When Portland cement and aggregate are mixed with water, _________reactions bond the Portland cement to the aggregate, thereby forming solid concrete.
Fill in the blank(s) with the appropriate word(s).
hydration
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When unpolarized light from air (with refractive index 1.00 ) strikes a piece of glass with index of refraction 1.80,
the reflected light is found to be completely polarized when the angle of incidence is equal to Brewster's angle. What is the angle of refraction in this case?
Two ways that the temperature of a gas can be increased are by __________ and __________
Fill in the blank(s) with correct word
Ohm's law gives the relationship between
a. current and voltage. b. work and current. c. current and charge. d. force and current.
Two toy cars (16 kg and 2 kg) are released simultaneously on an inclined plane that makes an angle of 30° with the horizontal. Which statement best describes their acceleration after being released?
A) The 16-kg car accelerates 8 times faster than the 2-kg car. B) The 2-kg car accelerates 8 times faster than the 16-kg car. C) Both cars accelerate at a rate of 8?g. D) Both cars accelerate at a rate of 0.866 g. E) Both cars accelerate at a rate of g sin(30°).