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3241004551 [841]
4 years ago
6

If a cart slows from +22.0 m/s with an acceleration of -2.0, how long dose it req

Physics
1 answer:
BigorU [14]4 years ago
6 0

Answer:

t = 11 s

Explanation:

a=v-u/t

-2 = 0-22 / t

-2t = -22

t = -22/-2

t = 11

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Two insulated wires, each 2.64 m long, are taped together to form a two-wire unit that is 2.64 m long. One wire carries a curren
nikklg [1K]

Answer:

4.77\ \text{A}

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F = Magnetic force = 4.11 N

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\theta = Angle between current and magnetic field = 65^{\circ}

l = Length of wires = 2.64 m

I = Current in the other wire

Magnetic force is given by

F=I_nlB\sin\theta\\\Rightarrow I_n=\dfrac{F}{lB\sin\theta}\\\Rightarrow I_n=\dfrac{4.11}{2.64\times 0.59 \sin65^{\circ}}\\\Rightarrow I_n=2.91\ \text{A}

Net current is given by

I_n=I_2-I\\\Rightarrow I=I_2-I_n\\\Rightarrow I=7.68-2.91\\\Rightarrow I=4.77\ \text{A}

The current I is 4.77\ \text{A}.

8 0
3 years ago
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