general science
physics:Questions
1.The main power supply in India is 220 v,whereas that in the US is at 110v because 110v works better at higher latitudes.
2. For a steel boat floating on a lake, the weight of the water displaced by the boat is -equal to the weight of the part of the boat which is below the water level of the lake.
3. The torque on a rectangular coil placed in a uniform magnetic field is large when the number of turns is large
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