Radioactive decay was discovered in 1896 by
a. Ernest Rutherford.
b. Niels Bohr.
c. Henri Becquerel.
d. Marie and Pierre Curie.
c
Physics & Space Science
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Significant Figures: The number of significant figures in 0.040 is
A. one. B. two. C. three. D. four.
Physics & Space Science
A block of Styrofoam floats on water while a lead block of the same size block lies submerged in the water. The buoyant force is greatest on the
A) lead. B) Styrofoam. C) same for both
Physics & Space Science
Optical density is directly proportional to
A) mass density. B) light speed. C) index of refraction. D) index of reflection.
Physics & Space Science
Electrical resistance is greater for
A) dry skin. B) wet skin. C) both the same
Physics & Space Science