A planet found orbiting a star other than the Sun is called a(n) ____________
Fill in the blank(s) with correct word
extrasolar planet
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As the pH increases, the hydroxide ion concentration
A) goes down. B) gets larger. C) starts to affect the H+ concentration. D) starts to decrease because it is reacting with the excess hydronium ions. E) stays constant.
A certain crystal has an interatomic spacing of 0.442 nm. A beam of neutrons moving with a speed of 1640 m/s is diffracted from the crystal. What is the angle of the second interference maximum?
A) 17.0° B) 21.0° C) 33.0° D) 60.0° E) 90.0°
Three resistors of 12, 12, and 6.0 ? are connected in parallel. A 12-V battery is connected to the combination. What is the current through the 6.0-? resistor?
A) 1.0 A B) 2.0 A C) 3.0 A D) 4.0 A E) 5.0 A
Which are more massive, the black holes in X-ray binaries or those at the centers of galaxies?
A: Black holes in X-ray binaries are more massive. B: Black holes in the centers of galaxies are more massive.