A water wave spreading out in a circle across the surface of a pond is an example of
A) a two-dimensional wave.
B) witchcraft.
C) a one-dimensional wave.
D) particle motion, or mass motion, rather than wave motion.
E) a three-dimensional wave.
A
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Force on a Moving Charge: An electron has an initial velocity to the south but is observed to curve upward as the result of a magnetic field. This magnetic field must have a component
A. to the west. B. to the east. C. upward. D. downward. E. to the north.
Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°. What is the wavelength of the incident light?
A) 202 nm B) 403 nm C) 452 nm D) 605 nm E) 806 nm
If the pencil you are holding were 10 times as long and 10 times as wide, its surface area would be multiplied by
1) 10 2) 100 3) 1000 4) 10,000 5) none of these and its volume would be multiplied by 6) 10. 7) 100. 8) 1000. 9) 10,000. 10) none of these.
Work-Energy Theorem: On an alien planet, an object moving at 4.0 m/s on the horizontal ground comes to rest after traveling a distance of 10 m. If the coefficient of kinetic friction between the object and the surface is 0.20, what is the value of g on that planet?
A. 4.0 m/s2 B. 6.0 m/s2 C. 8.0 m/s2 D. 10 m/s2 E. 12 m/s2