Other questions in this quiz

2. black

  • radiates thermal energy
  • absorbs thermal energy
  • reflects thermal energy

3. commutator in a DC motor

  • reverses every half turn so the force is always in the same direction and the motor turns the same way
  • provides current to the coil which ensures current always flows clockwise throught the coil

4. independant variable

  • changes
  • stays the same
  • what is measured

5. human hearing range is

  • 20-20,000hz
  • 200-2000hz
  • 20-2000hz
  • 20-200,000amps

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