A region of space contains a uniform electric field oriented along the y-axis. A frame of surface area A is placed perpendicular to the y-axis in the xz-plane. The magnitude of the electric flux through this frame is ?0
A second frame is placed in the same electric field in such a way that the magnitude of the electric flux through it is ?0/2. How is the plane of second frame oriented with respect to the plane of the first one? A)
at a 90° angle
B)
at a 60° angle
C)
parallel to the first frame
D)
perpendicular to the first frame
E)
at a 30° angle
B
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A) its contribution to global warming. B) accidents. C) lack of sufficient coal resources. D) its contribution to acid rain. E) waste disposal.
Which of the following best describes convection?
A) It is the process by which rocks sink in water. B) It is the process in which warm material expands and rises while cool material contracts and falls. C) It is the process in which warm material gets even warmer and cool material gets even cooler. D) It is the process in which a liquid separates according to density, such as oil and water separating in a jar. E) It is the process in which bubbles of gas move upward through a liquid of the same temperature.
An object that has twice as much mass as another object also has twice as much
A) inertia. B) velocity. C) gravitational acceleration. D) volume. E) all of the above
The ___________of the product is the extent to which the product meets the performance criteria.
Fill in the blank(s) with the appropriate word(s).