If the plane x = 4 m is an equipotential surface, in which of the following directions can the electric field be in the region immediately adjacent to this plane?
a. the positive y direction
b. both the positive and negative z directions
c. the positive x direction
d. more than one of these choices
c
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The competition between the electrostatic force between the protons in a nucleus and the strong nuclear force determines whether a nucleus is stable
Indicate whether the statement is true or false
Galaxies with disks but no evident spiral arms are called
A) irregular galaxies. B) lenticular galaxies. C) barred spiral galaxies. D) spheroidal components.
A real object is place to the left of a converging lens and an image forms. Then, to the right of the converging lens a diverging lens is placed. A real, inverted final image forms to the right of the diverging lens. Which of the following could give this result?
a. An upright virtual image caused by the first lens forms between the two lenses. b. An inverted real image caused by the first lens forms between the two lenses. c. A real, upright image was formed by the first lens to the right of where the diverging lens is to be placed. d. A real, inverted image was formed by the first lens to the right of where the diverging lens is to be placed.
A small dense object is suspended from the rear view mirror in a car by a lightweight fiber. As the car is accelerating at 1.90 m/s2, what angle does the string make with the vertical?
What will be an ideal response?