When radium-224 emits an alpha particle, the remaining daughter nucleus is which of the following?
a. actinium-215
c. bismuth-215
b. lead-213
d. radon-220
D
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Are the P waves and the S waves associated with earthquakes transverse or longitudinal?
a. Both are transverse. b. Both are longitudinal. c. P waves are transverse, and S waves are longitudinal. d. P waves are longitudinal, and S waves are transverse.
A prankster drops a water balloon from the top of a building. If the balloon is traveling at 29.1 m/s when it strikes a window ledge that is 1.5 m above the ground, how tall is the building? Neglect air resistance
A) 45 m B) 43 m C) 46 m D) 47 m
The Moon and Mercury can be eliminated as hosts for life because:
A) they do not have an atmosphere and water would boil away into space. B) they have water in the form of ice. C) they only have traces of water vapor in their atmospheres. D) they do not have solid surfaces.
Which of the following steels has the highest hardenability?
(a) 1050 (b) 1080 (c) 4320 (d) 4340