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Alex787 [66]
3 years ago
10

This back-and-forth movement of electrons is called . In contrast, the movement of electrons in one direction in a battery circu

it is called .
Physics
1 answer:
stich3 [128]3 years ago
5 0
The back-and-forth movement of electrons is called alternating current. Electrons go back and forth, the direction of their path alternates from one direction to another.

the movement of electrons in one direction is called direct current. The electrons move in a direct, single path without changing directions.
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The car's initial speed was 15 m / s and the distance the car travels before it comes to a complete stop after the driver applie
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Initial speed of the car (u) = 15 m/s

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\bf \longrightarrow  {v}^{2}  =  {u}^{2}  + 2as \\  \\ \rm \longrightarrow  {0}^{2}  =  {15}^{2}  + 2 \times a \times 63 \\  \\ \rm \longrightarrow 0 = 225 + 126a \\  \\ \rm \longrightarrow 126a =  - 225 \\  \\ \rm \longrightarrow a =  -  \dfrac{225}{126}  \\  \\ \rm \longrightarrow a =  - 1.78 \: m {s}^{ - 2}

\therefore Acceleration of the car (a) = -1.78 m/s²

Magnitude of the car's acceleration (|a|) = 1.78 m/s²

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