Explain why equipotential surfaces are always perpendicular to the electric field vectors
What will be an ideal response?
If the electric field is not perpendicular to an equipotential, the field would do work on a charge that moves along the equipotential. In this case, the potential energy of the charge would change, and the surface would not in fact be an equipotential.
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During the June solstice, the Sun rises in the southeast horizon in Earth's Northern Hemisphere.
Answer the following statement true (T) or false (F)
The brightest star (apparent magnitude –1) in the night sky in the Northern Hemisphere is named
a. Polaris. b. Sirius. c. Deneb. d. Alpha Centauri.
Stratification, or ______________, is the layering that develops at the time sediments are deposited
Fill in the blank(s) with correct word
When at rest, a spacecraft has the same height as length. When moving at relativistic speeds in the direction of its length, which one of the following describes its length and height to an observer at rest?
a. Its length is decreased and its height is increased. b. Its length is decreased and its height is decreased. c. Its length is decreased and its height is unchanged. d. Its length is unchanged and its height is increased. e. Its length is increased and its height is decreased.