Consider the segment of cylindrical metal wire shown below. Note that the drift speed of electrons is increasing in the wire as we move to the right. Assume that charge cannot move off the wire. The total charge between the two cross-sectional areas A and B is
A. Increasing.
B. Decreasing.
C. Remaining the same.
A. Increasing.
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The maximum mass of a white dwarf is
A) about the mass of our Sun. B) limitless; there is no theoretical limit to the maximum mass of a white dwarf. C) about 3 times the mass of our Sun. D) about 1.4 times the mass of our Sun.
The Himalayas were formed by
A) two pieces of continental crust colliding B) two pieces of oceanic crust colliding C) two pieces of continental crust separating D) pieces of oceanic and continental crust colliding
Which of the following best defines lossless compression?
A. The degradation of image quality during compression. B. All image data is retained during compression. C. When a file size cannot be further reduced. D. Removing one color to create a transparency.
Which one of the following conditions is not a requirement for a particle to experience a magnetic force when placed in a magnetic field?
a) The particle must be moving. b) The particle must be charged. c) The particle must not be under the influence of any other forces. d) The velocity of the particle must have a component that is perpendicular to the direction of the magnetic field.