The most important force between a proton and a neutron is the ______________ force
a. strong nuclear
b. quark
c. electromagnetic
d. gravitational
a
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Consider a point charge and an imaginary spherical surface surrounding it. Which of the following situations would bring about a change in the electrical flux through the surface
A. Exchanging the spherical surface for a cylindrical surface that still contains the original point charge B. Bringing a second point charge nearby, but outside the surface C. Moving the point charge to a point not in the center of the spherical surface D. Bringing a second point charge nearby, and within the surface
Ohm's Law: For the graph shown in the figure, what physical quantity does the slope of the graph represent for ohmic material?
A. current B. resistivity C. 1/(current) D. power E. 1/(resistivity)
Neutron stars are the densest objects that we can observe in the universe
Indicate whether the statement is true or false
The force that holds atoms together to form molecules is
1) electric, 2) magnetic, 3) gravitational, 4) nuclear, and the force that holds the protons in a nucleus together is 5) electric. 6) magnetic. 7) gravitational. 8) nuclear.