Smog is a mixture of smoke and
a. fog.
b. CO2.
c. O2.
d. CO.
a
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An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If Bx = 0, what is the direction of the magnetic field?
A. negative y direction B. positive y direction C. negative z direction D. positive z direction E. negative x direction
A cube of wood of density 0.780 g/cm3 is 11.2 cm on a side. When placed in water, what height of the block will float above the surface? (water density = 1.00 g/cm3)
a. 8.74 cm b. 11.2 cm c. 2.46 cm d. 3.46 cm e. 1.46 cm
For the two resistors shown in the figure below, rank the currents at points a through f from largest to smallest
Graphical Addition: Consider two vectors 
and 
shown in the figure. The difference 
- 
is best illustrated by
A. choice (a) B. choice (b) C. choice (c) D. choice (d)