Fill in blank space with the following words: Black Hole Law of Universal Gravitation Efficiency Power Weight Rotational Speed Torque A concentrated mass...

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Physics

Fill in blank space with the following words:

Black Hole

Law of Universal Gravitation

Efficiency

Power

Weight

Rotational Speed

Torque

  1. A concentrated mass resulting from gravitational collapse nearwhich gravity is so strong not even light can escape is calleda                     ].
  2. The ratio of the output energy for a machine to the total inputenergy is calledthe                       of the machine.
  3. “For any pair of objects, each body attracts the other with aforce that is directly proportional to the product of their massesand inversely proportional to the square of the distance betweentheir centers of mass.” This is a statementof                             .
  4.                     isthe rate at which work is done or energy is transformed:work/time.
  5.                     isthe number of rotations per unit time.
  6. The product of the force and the lever arm on a body whichimparts a rotational acceleration on the object iscalled              .

7. The force of an object on a surface, usually due to gravity,is called

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