# A charge of #7 C# is at the origin. How much energy would be applied to or released from a # 9 C# charge if it is moved from # (-5, 1 ) # to #(2 ,-1 ) #?

The energy applied is

Potential energy is

The separation

The separation

Consequently,

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The energy applied to the 9 C charge would be 162 joules.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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