Explain the Welding ?
Answer / pravin tripathi
Welding:-It is the process if joining two metal surfaces by melting them and then fusing them together
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Mercury thermometer is constructed as shown in Figure The capillary tube has a diameter of 0.004 cm, and the bulb has a diameter of 0.250 cm. neglecting the expansion of the glass, find the change in height of the mercury column that occurs with a temperature change of 30.0 °C.
Why us the height of mercury column unaffected by the difference in the value of gravity at the same place?
For what the parabolic dishes are used?
why we need complex no. in physical world?
Draw a graph between frequency of photon and velocity of photo electron?
Explain what is relation between magnetic and electricity and why?
Why does a semicondctor act as an insulator at 0'k and why its conductivity increases with increasing temperature?
Why does the moon shine, evening though it has not light of its own ?
Why is it easier to swim in sea water than in the river water?
What are the steps to the scientific notation?
Explain the Liquids ?
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