The mass of a body is measured by two persons is 10.2 kg and 10.23 kg. Which is more accurate and why ?

The mass of a body as measured by two students is given as 1.2 kg and 1.23 kg. Which of the two is more accurate and why?

The masses of two bodies are measured to be 15.7 +- 0.2 kg and 27.3 +- 0.3 kg. What is the total mass of the two and error in it.

The mass of body is measured to be 12 kg on the earth. Its mass on moon will be

The mass of a body is measured as 2.00 xx 10^(3) Kg . Its significant figures is

The mass of a body is 20-0 kg. Taking the pull of gravity on mass 1 kg equal to 10 N, express the weight of the body in newton .