Which would ultimately cause the armature in an electric motor to spin? O The current in the armature stops.
O The gap in the commutator closes.
O The current in the armature is reversed.
O The commutator loses contact with the brushes.

Your pendulum clock which advances 1.0 s for every complete oscillation of the pendulum is running perfectly on earth at a site where the magnitude of the acceleration due to gravity is 9.80 m/s2. you send the clock to a location on the moon where the magnitude of the acceleration due to gravity is 1.65 m/s2.

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?