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`        Hello ….…    Two stars each of one solar mass ( = 2 x 10 ^30 kg) are approaching each other for a head on collision . When they are a distance of 10 ^9 km , their speeds are negligible . What is the speed with which they collide ? The radius of each other is 10 ^4 km . Assume the stars to remain undistorted until they colide .`
3 years ago

Vikas TU
9756 Points
```							Considering the total energy =>0.5mv^2 + 0.5mv^2 – GMM/2R = -GMM/rsolving v^2 = GM(-1/r + 1/2R)puttig the values given in qstn. we get,v = root(6.66 x 10^12) => 2.58 x 10^6 m/s
```
3 years ago
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• 18 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions