for example u win $10 million in a lottery, when you tell the reporter "i am delighted" that would be an understatement
Answer:
You can change it in the editing or ask the teacher if the can let you back to revising
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Answer:
MA of lever is 3 means that the applied force can lift 3 times heavier load using that machine.
VR of a lever is 4 means the effort has to move 4 times more distance than that of load distance to lift any load up to certain height.
efficiency of 60% means that 40% of energy is wested due to friction, heat energy.
