The color force between quarks is carried by mesons
Indicate whether the statement is true or false
F
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Uranium-238 decays into lead-206 with a half-life of 4.5 billion years. Suppose you found a rock in which only 1/4 of the original uranium-238 remained (the other ¾ having become lead-206). How old would the rock be?
A) 9 billion years B) 4.5 billion years C) 2.25 billion years D) 13.5 billion years
What do the orbits of Populations I and II stars tell us about the formation of the Milky Way?
What will be an ideal response?
Two charges lie on the x axis, +2q at the origin, and ?3q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is
A. 1.0 m. B. 2.0 m. C. 2.5 m. D. 3.0 m. E. 4.0 m.
Distance covered per unit of time is called
a. speed. b. acceleration. c. velocity. d. displacement.