physics

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1.when a person diet's is their goal to lose weight?explain.
2.a man enters an elevator holding 2 boxes one on top of the other the top box has a mass of 6.0kg,the bottom box has a mass of 8.0kg. the man sets the 2 boxes on a metric scale sitting on the floor when the elevator accelerate upward, the man observe that the scale reads a value of 166 N (newton). (this is the upward force upon the bottom box ).
determine the acceleration of the elevation?
determine the force acting between the boxes?
please give me your solution

p.s. this is my first time posting here

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