The object in a ray diagram is perpendicular to the principal axis but does not have one end lying on the principal axis. The minimum number of rays that must be drawn in this ray diagram in order to determine the position of the image is
a. 1.
b. 2.
c. 3.
d. 4.
e. 5.
C
Physics & Space Science
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Determine the energy stored by C4 when C1 = 20 ?F, C2 = 10 ?F, C3 = 14 ?F, C4 = 30 ?F, and V0 = 45 V.
A. 3.8 mJ B. 2.7 mJ C. 3.2 mJ D. 2.2 mJ E. 8.1 mJ
Physics & Space Science
A liter-sized block of wood floats in water. The volume of water displaced is
A) less than 1 L. B) 1 L. C) greater than 1 L. D) none of the above
Physics & Space Science
Which of these does not have an electrical charge?
A) proton B) electron C) neutron D) all of the above E) none of the above
Physics & Space Science
The half life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is
a. 35 years b. 70 years c. 125 years d. 140 years e. none of the above
Physics & Space Science