The resolving power of a microscope refers to the ability to
A) distinguish objects of different colors.
B) form clear images of two points that are very close together.
C) form a very large image.
D) form a very bright image.
E) form a very microscopic image.
B
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Which is a unique feature of Pluto's satellite, Charon, standing out from most other satellites?
a. has an atmosphere b. tidally locked to Pluto c. mostly composed of rock d. its surface is composed of methane ice e. orbits in the plane of Pluto's equator
The greenhouse effect occurs on Earth because carbon dioxide is
a. transparent to visible light and opaque to infrared radiation. b. opaque to visible light and transparent to infrared radiation. c. totally opaque to both visible light and infrared radiation. d. totally opaque to both visible light and infrared radiation.
What is the ground-state valence-shell electron configuration of the group of elements indicated by the shaded portion of the periodic table?
A)ns2
B)ns2np2
C)ns2(n-1)d2
D)ns2(n-2)f2
The Hubbert curve for an energy resource displays what quantity on the y-axis?
a. time b. total production c. yearly production d. amount of fuel left