If you think of a battery as an electric charge ‘pump,' the battery voltage is analogous to
a. rate of fluid flow.
b. pressure.
c. flow velocity.
d. water.
e. none of the above.
b
Physics & Space Science
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At time B, is the expansion of the universe accelerating, coasting, or decelerating?
What will be an ideal response?
Physics & Space Science
Find the equation 
bt that fits the following data.
A. 
B. 
C. 
D. 
Physics & Space Science
Alien astronomers are using the radial-velocity method to look for planets around our Sun. Which planet are they most likely to detect first?
A. Jupiter B. Neptune C. Mercury D. Earth
Physics & Space Science
The intensity of unpolarized light passing through a single sheet of polarizing material changes by a factor of:
a. 1. b. 0.5. c. cos ?. d. cos2 ?.
Physics & Space Science