Seven seconds after a brilliant flash of lightning, thunder shakes the house. How far was the lightning strike from the house?
A)
Much closer than one kilometer
B)
About one kilometer away
C)
About two kilometers away
D)
Much farther away than two kilometers
E)
It is impossible to predict.
C
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A negatively charged particle is moving in the +x-direction when it enters a region with a uniform electric field pointing in the +x-direction. Which graph gives its position as a function of time correctly? (Its initial position is x = 0 at t = 0.)
A.
B.
C.
D.
E.
On a hot day, molecules of air ________ than on a cold day.
A) move faster on average B) move slower on average C) are more massive D) are less massive E) contain more atoms
The use of grids for responsive web design layout ensures pages will adapt to different screen sizes.
Answer the following statement true (T) or false (F)
The viscosity of a liquid with increasing temperature is
(a) The inverse of an Arrhenius relationship. (b) An Arrhenius relationship. (c) A linear increase. (d) A linear decrease.