A Planet of Mass M Orbits a Star in a Circular

question 37

Multiple Choice

A planet of mass M orbits a star in a circular orbit of radius R, with orbital period T. What would be the orbital period of another planet, orbiting at radius R, but having mass 2M?

• A) 0.71T
• B) T
• C) 1.4T
• D) 2T
• E) 0.50T

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Definitions:

Drug Therapy

The use of psychotropic drugs to reduce the symptoms of psychological disorders.

Brain Stimulation

Interventions that directly or indirectly stimulate the brain in order to bring about psychological improvement.

Electroconvulsive Therapy

A psychiatric treatment in which seizures are electrically induced in patients to relieve severe mental disorders.

ECT

Electroconvulsive Therapy, a medical treatment most commonly used for severe depression which involves inducing seizures in anesthetized patients through electrical currents.