The term pegmatite refers to an igneous rock with a particular ____________________ rather than a specific ____________________
Fill in the blank(s) with correct word
texture, composition
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A 10-kg block with an initial velocity of 10 m/s slides 10 m across a horizontal surface and comes to rest. It takes the block 2 s to stop. The stopping force acting on the block is about
A) 5 N. B) 10 N. C) 25 N. D) 50 N. E) none of the above
When an amine reacts with an anhydride to produce an amide, what else is formed?
A) an alcohol B) a carboxylic acid C) water D) No other compound, the amide is the only product.
In which of the following proteins is the b-pleated sheet the predominant structure?
A) keratin B) silk C) both a and b D) neither a nor b
Which of the following scenarios would likely result in the development of a passive continental margin?
A) Two tectonic plates colliding, creating a submarine trench B) Continental blocks rifting apart and becoming separated by seafloor spreading C) Two tectonic plates sliding past each other, rotating part of the crust D) A mantle plume creating a chain of volcanic islands across the seafloor