A charged particle moving with a certain velocity along the +x-axis enters a magnetic field pointing toward the +z-axis. Because of an electric field along the +y-axis the charge particle continues to move along the +x-axis
What is the sign of this particle? A) positive
B) negative
C) The particle could be either positive or negative.
D) None of the other choices is correct.
C
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Lenz's Law: As shown in the figure, two solenoids are in line. The switch S, initially closed, is suddenly opened. Just after opening S, what is the polarity of the induced emf in terminals X and Y?
A. X and Y are at the same potential. B. X is positive and Y is negative. C. Y is positive and X is negative.
Monatomic, diatomic, and polyatomic ideal gases each undergo slow adiabatic expansions from the same initial volume and the same initial pressure to the same final volume. The magnitude of the work done by the environment on the gas:
A. is greatest for the polyatomic gas B. is greatest for the diatomic gas C. is greatest for the monatomic gas D. is the same only for the diatomic and polyatomic gases E. is the same for all three gases
All optical telescopes will bring the light from a star to a focus
Indicate whether the statement is true or false
Resonance occurs in an AC series circuit when which of the following conditions is met?
a. resistance equals capacitive reactance b. resistance equals inductive reactance c. capacitive reactance equals inductive reactance d. capacitive reactance equals zero