Three charges of magnitude 3.0\times 10^{-4}3.0 × 10 − 4 C each are located at x = 1.0 m, y = Three charges of magnitude 3.0\times 10^{-4}3.0 × 10 − 4 C each are located at x = 1.0 m, y = 0.0 m, at x = 0.0 m, y = 0.0 m, and at x = -1.0 m, y = 0.0 m. The one in the middle is negative, while the other two are positive.

What is the net Coulombic force exerted by them on a negative \times10^{-5}3.0 × 10 − 5 C charge located at x = 0.0 m, y = 2.0 m(the value of k is 9.0x10^9 N. m^2/C^2)

The duration of a photographic flash is related to an rc time constantly

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Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

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