Francium-223 decays to radium-223 by emitting what kind of nuclear radiation?
A)
Alpha
B)
Beta minus
C)
Beta plus
D)
Gamma
E)
X-rays.
B
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A starburst galaxy is a galaxy that:
A) is undergoing a rapid surge of white dwarf explosions. B) is undergoing a rapid surge of star formation. C) has never interacted with another galaxy. D) is undergoing a rapid burst of supernovae explosions.
Substitute the correct prefix to the fun-word "1012-tory"
A) milli B) kilo C) giga D) pico E) tera
An athlete competing in the long jump leaves the ground with a speed of 9.14 m/s at an angle of 55° with the vertical. What is the length of the athlete's jump if air resistance is of no significance?
A) 0.88 m B) 8.0 m C) 12 m D) 17 m E) 4.0 m
The phase of the Moon on a particular night is determined by
a. the season of the year. b. the speed of the Moon in is orbit. c. the relative positions of the Sun, Earth, and Moon. d. how the Earth's shadow hits the Moon. e. the distance from the Earth to the Moon.