A certain string has a mass of 120 g and a length of 40 cm .Consider the quantit

Question

A certain string has a mass of 120 g and a length of 40 cm .Consider the quantity 3=120/40.
1. Give the name of the quantity if there is one.
2. What is the interpretation of the quantity in this context?(Recall that an interpretation often begins with "It is the numberof ")
3.Use the interpretion to find the mass of 7 cm of the samekind on string.
1. Give the name of the quantity if there is one.
2. What is the interpretation of the quantity in this context?(Recall that an interpretation often begins with "It is the numberof ")
3.Use the interpretion to find the mass of 7 cm of the samekind on string.

Explanation / Answer

  name of quatity (3) = mass per unit cm
interpretation : it represents the mass of 1 cm lengthof the rope
  mass of 7 cm of same string = 3*7          = 21 g

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