The combination of two separated point charges of opposite sign but equal magnitude is called an electric:
a. monopole.
b. dipole.
c. quadrapole.
d. magnapole.
b
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A bird, accelerating from rest at a constant rate, experiences a displacement of 37 m in 11 s. What is the average velocity?
a. 1.7 m/s c. 3.4 m/s b. 2.5 m/s d. zero
Which of the conservation laws listed below is violated by the reaction 
A. baryon number B. electron-lepton number C. muon-lepton number D. charge E. tau-lepton number
Water pressurized to 3.00 × 10^5 Pa is flowing at 5.25 m/s in a pipe which contracts to 1/2 of its former area. What are the pressure and speed of the water after the contraction? (Density of water = 1 × 10^3 kg/m3.)
a. 2.59E+5 Pa, 10.5 m/s b. 3.00E+5 Pa, 2.63 m/s c. 3.00E+5 Pa, 10.5 m/s d. 4.59E+5 Pa, 10.5 m/s e. 2.59E+5 Pa, 2.63 m/s
If an electron has a wavelength of 0.123 nm, what is its kinetic energy, in electron-volts? This energy is not in the relativistic region
(melectron = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s) A) 19.8 eV B) 60.2 eV C) 80.4 eV D) 99.5 eV E) 124 eV