Which mass is the same as 0.031 g?

0.031 g is equal to 31 grams

0.000031 kg

Explanation:

There are 1000 g in 1 kg, so

0.031 g / 1000 g = 0.000031 kg

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.