Which of the following combinations of nucleons would be the most likely to result in a stable nucleus? ("Odd" and "even" refer to the numbers of protons and neutrons in the nucleus.)
A) odd protons, even neutrons
B) even protons, odd neutrons
C) odd protons, odd neutrons
D) even protons, even neutrons
D
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For the wave described by 
, determine the first positive x coordinate where y is a maximum when t = 0.
A. 16 m B. 8 m C. 4 m D. 2 m E. 13 m
A student has made the statement that the electric flux through one half of a Gaussian surface is always equal to the flux through the other half of the Gaussian surface. This is
a. never true. b. never false. c. true whenever enclosed charge is symmetrically located at a center point, on a center line, or on a centrally placed plane. d. true whenever no charge is enclosed within the Gaussian surface. e. true only when no charge is enclosed within the Gaussian surface.
An object that weighs 2.450 N is attached to an ideal massless spring and undergoes simple harmonic oscillations with a period of 0.640 s. What is the spring constant of the spring?
A) 2.45 N/m B) 12.1 N/m C) 24.1 N/m D) 0.102 N/m E) 0.610 N/m
In a wind tunnel the pressure on the top surface of a model airplane wing is 8.8 × 10^4 N/m and the pressure on the bottom surface is 9.0 × 10^4 N/m2 . If the area of the top and bottom surfaces of each wing is 2.0 m2, what is the total lift on the model airplane?
a. 2.0 × 10^3 N b. 8.0 × 10^3 N c. 1.6 × 10^4 N d. 3.6 × 10^4 N e. 1.0 × 10^3 N