Login/Sign Up
Home » The mass of a box measured by a grocer’s balance is 2.30 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is
The mass of a box measured by a grocer’s balance is 2.30 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is
CBSE | Class 11 | NCERT | Physics | Units and Measurements
The mass of a box measured by a grocer’s balance is 2.30 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is

(a) the total mass of the box,

(b) the difference in the masses of the pieces to correct significant figures?

Answer:

According to the question, mass of the box is 2.30 kg and the mass of the first gold piece is 20.15 g. Also, the mass of the second gold piece is 20.17 g.

Then, the total mass = 2.300 + 0.2015 + 0.2017

= 2.7032 kg

Since the least number of decimal places is 1, the total mass = 2.7 kg.

The mass difference of pieces = 20.17 – 20.15 = 0.02 g

Since the least number of decimal places is 2, the total mass difference= 0.02 g.

i

More Material