Capacitors of values 1.0 F, 2.0 F, 3.0 F, and 6.0 F are connected in series across a 12 V power supply. Which capacitor has the greatest charge on it?
A. the 1.0 F capacitor
B. the 2.0 F capacitor
C. the 3.0 F capacitor
D. the 6.0 F capacitor
E. they are all equal
E. they are all equal
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The following items are positioned in sequence: A source of a beam of natural light of intensity I0, three ideal polarizers A, B, and C; and an observer. Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer
The axis angle of polarizer A is set at 0° (vertical), and the axis angle of polarizer C is set at 50°. Polarizer B is set so that the beam intensity is zero at the observer. What are the two possible axis angle settings (less than 180°) of polarizer B? A) 40° and 90° B) 40° and 130° C) 40° and 140° D) 90° and 130° E) 90° and 140°
A simple magnifier makes an image appear at the near point distance from the eye of the viewer (25 cm). What is the magnifying power of the magnifier if it is constructed of a lens of focal length of 6.3 cm? Do not use the approximation formula
a. 5.0 c. 1.2 b. 50 d. 7.3
The core of a highly evolved high mass star is a little larger than
A) our solar system. B) our Sun. C) Jupiter. D) Earth. E) a white dwarf.
Which of the following principles explains why guns recoil?
A) Conservation of momentum. B) Conservation of energy. C) The law of inertia. D) Newton's law of motion. E) None of the above.