Answers edited by Bidesh B.

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• What is the mass defect? and binding energy in MeV for atom?
  
• Question #8dc25
  
• An elevator can carry a maximum load of 1800kg, is moving up with a constant speed of 2m/s. The frictional force opposing the motion is 4000N. Determine the minimum power delivered by the motor to the elevator in watts?
  
• Question #1a7d6