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Physics

Physics
An object that has kinetic energy must be

At an elevated position
At rest
Moving
Falling

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Physics
Which of the following criterion is used for any metal to be used as a cooking material ?

Less electrical conductivity
Less thermal conductivity
More specific heat
More thermal conductivity

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Physics
Pitot tube is used to measure

Stagnation pressure
Dynamic pressure
Static pressure
Velocity at stagnation point

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Physics
When a ship enters the sea from a river

It rises a little
It remains at the same level
It sinks a little
It rises or sinks depending on the material it is made of

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Physics
Sprayer functions on

Pascal's law
Archemede's principle
Floatation principle
Bernouli's principle

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Physics
The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ?

8.5 A
24 A
0.41666666666667

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