Question

1) Write the formula of special relativity and for what it is used for?
2) The mass of a box measured by a grocers balance is 2.300KG.2 gold pieces of masses 20.15 g and 20.17 g into the box ,Write the difference of masses of the pieces to correct significant figures

Answer 1

I only know the first one.

e=much

It was found by the leading scientist of the 20th century, Albert Einstein
It is used to calculate the energy.

E stands for Energy
M stands for Mass
C² stands for Square of Speed of Light

Answer 2

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Mass of grocer’s box = 2.300 kg

Mass of gold piece I = 20.15g = 0.02015 kg

Mass of gold piece II = 20.17 g = 0.02017 kg

Total mass of the box = 2.3 + 0.02015 + 0.02017 = 2.34032 kg

In addition, the final result should retain as many decimal places as there are in the number with the least decimal places. Hence, the total mass of the box is 2.3 kg. Difference in masses = 20.17 – 20.15 = 0.02 g

In subtraction, the final result should retain as many decimal places as there are in the number with the least decimal places.

I hope, this will help you

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