Name the primary and secondary colors of the subtractive theory of color
Primary colors are cyan, magenta, and yellow. Secondary colors are red, green, and
blue.
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Weight and g: An astronaut goes out for a "space-walk" at a distance above the earth equal to the radius of the earth. What is her acceleration due to gravity at that point?
A. zero
B. g
C. g/2
D. g/4
E. g/
At what point is the charge per unit area greatest on the surface of an irregularly shaped conducting solid?
a. where surface curves inward b. where surface is flat c. where curvature is least d. where curvature is greatest
A proton moving with a velocity of 4.0 × 104 m/s along the +y-axis enters a magnetic field of 0.20 T directed towards the -x-axis. What is the magnitude of the magnetic force acting on the proton? (e = 1.60 × 10-19 C)
A) 8.0 × 10-15 N B) 1.3 × 10-15 N C) 0 N D) 3.9 × 10-15 N E) 2.6 × 10-15 N
In order to produce an image double the size of an object with a converging lens of focal length f, what object distance should be used?
A. f B. f/2 C. 2f D. 2f/3 E. 3f/2