A crowbar of 2m length is pivoted about 40cm from its tip and load of 800N is lifted by applying an effort at the other end. Calculate effort, M.A.,V. R.,efficiency.

a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be?

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would be false hope this out

there are no components of a physical goal mentioned on the list of choices that you've provided.

conservation of mass

mass before something happens = mass afterwards