In a density of mass experiment, which of the following uncertainties do NOT affect the end result?

In a density of mass experiment, which of the following uncertainties do NOT affect the end result?

Select one:

a. Uncertainty in Gravity

b. Uncertainty in Volume

c. Uncertainty in Height

d. Uncertainty in diameter

A student is measuring a length of a screw and he observes the following readings:

Major scale: reading is in between 24mm and 25mm.

Minor scale: 5th division coincides with one of the division in major scale and the least count of the instrument is 0.05mm.

What is the best estimate for the length of the screw?

Select one:

a. 24.25

b. 24.05 mm

c. 24.5 mm

d. 23.75 mm