A capacitor is formed from a hollow copper sphere of inner radius 20.0 cm and outer radius 25.0 cm. Calculate the capacitance C of the sphere in microfarads.

Low percent error implies that measurements are closely grouped. is this true or false?

A student added recorded measurements of 8.0 cm, 8.01 cm and 9.00 cm. (a) How many significant figures are in each value? (b) How should he report his result using the correct number of significant figures?

The mass of an object was measured eight times on a balance readable to +1 g, and the followng values were recorded: (298 + 1)g. (311 + 1)g. (302 + 1)g, (312 + 1)g, (313 + 1)g, (317 + 1)g, (302 + 1)g, and (331 + 1)g. Find the final measurement ± m Select one: O a (310.75 + 4) g O b. (311 ±3.71) g O C. (311 +4) g O d. (310.75 +3.712) g