Rank the following five capacitors from greatest to smallest capacitance, noting any cases of equality
(a) a 20-µF capacitor with a 4-V potential difference between its plates
(b) a 30-µF capacitor with charges of magnitude 90 µC on each plate
(c) a capacitor with charges of magnitude 80 µC on its plates, differing by 2 V in potential,
(d) a 10-µF capacitor storing energy 125 µJ
(e) a capacitor storing energy 250 µJ with a 10-V potential difference
1.e > a > b > d > c
2.e > d > a > b > c
3.c > b > a > d > e
4.b > a = c > d = e
3
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Charge in an Electric Field: A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the right, between the plates. The separation of the plates is 40 mm. An electron is projected from plate A, directly toward plate B, with an initial speed of v0 = 2.0 × 107 m/s. What is the speed of the electron as it strikes plate B? (e = 1.6 × 10-19 C, melectron = 9.11 × 10-31 kg) 
A. 1.2 × 107 m/s B. 1.5 × 107 m/s C. 1.8 × 107 m/s D. 2.1 × 107 m/s E. 2.4 × 107 m/s
Algebraic symbols in physics equations represent physical quantities, therefore
A. the symbols represent numbers only. B. the symbols represent numbers and units. C. the symbols consist of units only. D. the symbols are only abstract. E. the symbols are only imaginary.
The number of cycles of a periodic process that occur per unit time is called the period
a. True b. False Indicate whether the statement is true or false
A Young’s double-slit experiment is performed with three different colors of light: red, green, and blue. Rank the colors by the distance between adjacent bright fringes, from smallest to largest
1.red, green, blue 2.green, blue, red 3.blue, green, red