The large space telescope that has been placed into an Earth orbit has an aperture diameter of 2.40 meters. What angular resolution will this telescope achieve for visible light of wavelength ? = 4.80 × 10^?7 m?
a. 2.44 × 10^?7 rads
b. 2.44 × 10^?4 rads
c. 2.44 × 10^?3 rads
d. 1.22 × 10^?6 rads
e. 2.00 × 10^?6 rads
a
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Consider a region of space where the electric field is uniform with magnitude 
, as shown below. What is the value of the specified potential difference in each case? (a) ?B - ?A? (b) ?C - ?B? (c) ?A - ?C?
A. 
B. 
C. 
D. 
E. 
F. 
T. zero
Most galaxies appear to be
a. composed of one star and seven planets. b. inside our Milky Way. c. located on the Earth. d. moving toward us. e. moving away from us.
Which of the following most clearly distinguishes asteroids and comets from planets?
A) Asteroids and comets are much smaller than planets. B) Asteroids and comets are made of different materials than any planets. C) Unlike planets, asteroids and comets do not orbit the Sun. D) Asteroids and comets are only found at much greater distances from the Sun than planets.
Place the three phases of water in order of increasing force of interaction between molecules:
A) ice, water, vapor B) vapor, ice, water C) water, ice, vapor D) vapor, water, ice