1ºEM - Practice with Significant Figures

 1-) Determine the perimeter and area of ​​an A4 sulfite sheet using a millimeter ruler for the length and the ruler indicated by the teacher for the width.

2-) Determine the grammage (G) of a sheet of paper defined as

 G = m / A 

where m is the mass of the sheet and A is the area calculated in exercise 1. Response in       g / m² (grams per square meter).

3-) Determine the density of the water,           

 d = m / V,

by measuring its mass m on a accuracy balance and its volume V in a  graduated cylinder in ml. Reminder: measure the mass of the empty graduated cylinder and after this, the mass of graduated cylinder  with water and subtract to obtain the water mass

4-) Determine the acceleration of local gravity by measuring the mass of a wooden block on an accuracy balance and its weight on a dynamometer. 

Reminder: weight = P = m. g, where m is the mass of the body and g is the acceleration of gravity. Logo g = P / m (P in N, m in kg and g in m / s²)