•• An electron moves to the right in a laboratory accelerator with a speed of 0.84c. A second electron in a different accelerator moves to the left with a speed of 0.43c relative to the first electron. Find the speed of the second electron relative to the lab.

Solution 43 P:

Step 1 of 1:-

Here, we have to find the speed of the 2nd electron wrt the lab.

Given that,

.

We know that,

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