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Under the influence of the Coulomb field...

Under the influence of the Coulomb field of charge `+Q`, a charge `-q` is moving around it in an elliptical orbit. Find out the correct statement(s).

A

The angular momentum of the charge `-q` is constant

B

The linear momentum of the charge `-q` is constant

C

Tlie angular velocity of the charge`-q` is constant

D

The linear speed of the charge `-q` is constant

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