Electrical and gravitational forces follow similar equations with one main difference:
A) Electrical forces obey the inverse square law and gravitational forces do not.
B) Gravitational forces obey the inverse square law and electrical forces do not.
C) Electrical forces attract and gravitational forces repel.
D) Electrical forces repel and gravitational forces attract.
E) Gravitational forces are always attractive but electrical forces can be attractive or repulsive.
E
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In our solar system
A: the planets in outer orbits move at a slower speed than those in inner orbits. B: the planets all move around the Sun at the same speed. C: the planets in outer orbits move at a faster speed than those in inner orbits.
Energy Conservation With Conservative Forces: A small but dense 2.0-kg stone is attached to one end of a very light rod that is 1.2 m long. The other end of the rod is attached to a frictionless pivot. The rod is raised until it is vertical, with the stone above the pivot. The rod is released and the stone moves in a vertical circle with no air resistance. What is the tension in the rod as the stone moves through the bottom of the circle?
A. 20 N B. 40 N C. 60 N D. 80 N E. 100 N
Consider an electron in a hydrogen atom. How does the wavelength ? of an energy eigen function (as measured around the circular band) depend on the energy E associated with that eigen function?
A. ? ? ?E?
B. ? ?
C. ? is independent of E.
D. ? ? 
E. ? ? 1/?E?
In the ______________ phase, ionic compounds conduct electricity
Fill in the blank(s) with correct word