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Physics

Physics
Mach number is used in connection with the speed of

spacecraft
sound
aircraft
ships

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Physics
The force that generates wind is

Coriolis force
Centrifugal force
Gravity force
Pressure gradient force

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Physics
When an atom loses an electron it becomes

Negative ion
Neutron
None of these
Positive ion

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Physics
Name the process by which bubbles from liquid are formed?

Effervescence
Surface Energy
Surface Tension
Degasification

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Physics
If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is

5 J
500 J
0.2 J
20 J

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Physics
According to special theory of relativity the mass of a particle

Increases with increase in velocity with respect to an observer.
Decreases with increase in velocity.
Is independent of its velocity.
Decreases with decrease in velocity.

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