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```				   A ring is cut from a platinum tube having 10cm internal and 11cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gram wieght is required to pull it away from water ? (g=10 m/s-2)
```

6 years ago

Share

```

2T=47.52/3.14x21
=> T=0.3603
```
6 years ago

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