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The unit of energy equivalent to 1 Joule is: (2023)

Practice Questions

Q1
The unit of energy equivalent to 1 Joule is: (2023)
  1. 1 kg·m²/s²
  2. 1 N·m
  3. Both 1 kg·m²/s² and 1 N·m
  4. None of the above

Questions & Step-by-Step Solutions

The unit of energy equivalent to 1 Joule is: (2023)
  • Step 1: Understand that 1 Joule is a unit of energy.
  • Step 2: Know that 1 Joule can be defined in terms of mass, distance, and time.
  • Step 3: Remember the formula for Joules: 1 Joule = 1 kg·m²/s².
  • Step 4: Recognize that Joules can also be expressed as force times distance.
  • Step 5: Recall that 1 Newton (N) is the force needed to accelerate 1 kg at 1 m/s².
  • Step 6: Therefore, 1 Joule can also be written as 1 N·m (Newton meter).
  • Step 7: Conclude that both definitions (1 kg·m²/s² and 1 N·m) are correct for 1 Joule.
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