The half-life of radioactive iodine-137 is 8.0 days. How many iodine nuclei are necessary to produce an activity of 1.0 ?Ci? (1 Ci = 3.70 × 1010 Bq)
A) 4.6 × 109 B) 7.6 × 1012 C) 2.9 × 109 D) 3.7 × 1010
D
Physics & Space Science
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The ____________________ is a measure of the finest detail that can be seen in an image
Fill in the blank(s) with correct word
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At time C, is the expansion of the universe accelerating, coasting, or decelerating?
What will be an ideal response?
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If an astronaut landed on a planet composed of antimatter, there would be an explosion and the
A) planet would annihilate. B) astronaut would annihilate. C) astronaut and an equal amount of planet antimatter would both annihilate.
Physics & Space Science
Revenue from a 10 MWe electrical power plant over 24 hours when electricity is sold at 7¢/kwh will be about:
a. $1,700 b. $17,000 c. $34,000 d. $340,000 e. $700,000
Physics & Space Science