In a pair of accelerating plates, such as found inside a CRT, the electrons are emitted
A) from the anode which is negative, toward the cathode which is positive.
B) from the cathode which is negative, toward the anode which is positive.
C) from the anode which is positive, toward the cathode which is negative.
D) from the cathode which is positive, toward the anode which is positive.
B
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A charged particle moves in a region of uniform magnetic field along a helical path (radius = 4.0 cm, pitch = 20 cm, period = 2.0 ms). What is the speed of the particle as it moves along this path?
a. 0.13 km/s b. 0.10 km/s c. 0.16 km/s d. 0.23 km/s e. 0.06 km/s
Radio waves have ________ wavelength and ________ frequency relative to visible light.
A. shorter; larger B. longer; smaller C. longer; larger D. shorter; smaller
Which of the following is a necessary condition for an ice mass to be a glacier?
A) Accumulation must exceed ablation. B) Basal sliding must occur. C) The ice mass must move under its own weight. D) Meltwater must be present.
During loading in a stress-strain test of a material, we observe that the plot is not linear and has no discontinuities. We can assume that:
(a) The material is nonlinear elastic. (b) The material is anelastic. (c) There is elastic and plastic strain. (d) None of the above can be assumed.