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A charged particle of mass 4kg& charge 2...

A charged particle of mass 4kg& charge 2C is projected with initial speed 20m/s at an angle `30^(@)` with the horizontal ( or +x -axis ) .A uniform electric field of intensity 10N/C is present in the region in the +y -direction.Find the maximum height attained by the particle? (Acceleration due to gravity is g=10m/s^(2) in y-direction):

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