A ring of negative, uniform charge density is placed on the xz-plane with the center of the ring at the origin. A positive charge moves along the y axis toward the center of the ring
At the moment the charge passes through the center of the ring A)
its velocity and its acceleration reach their maximum values.
B)
its velocity is maximum and its acceleration is zero.
C)
its velocity and its acceleration have non-zero values but neither is at its maximum.
D)
its velocity and its acceleration are both equal to zero.
E)
its velocity is zero and its acceleration is maximum.
B
You might also like to view...
Ice crystals in nearly frozen liquid water make up a
A) microscopic slush. B) region of lower density. C) both of these D) neither of these
The current drawn by a 1200-W toaster connected to 120 V is 10 A. The resistance of the toaster coils is
A) 6 ohms. B) 12 ohms. C) 18 ohms. D) none of the above
Which of the following best describes why the Sun emits most of its energy in the form of visible light?
A) Nuclear fusion in the Sun's core produces visible light photons. B) The Sun's gas is on fire like flames from wood or coal, and these flames emit visible light. C) Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light. D) The visible light comes from energy level transitions as electrons in the Sun's hydrogen atoms jump between level 1 and level 2.
An extraterrestrial observer would pick up the strongest radio signals when
A) the Earth was at perihelion. B) at new or full moon. C) North America was directly in front of the observers. D) North America was either rising or setting for the observer. E) the Super Bowl is on.